BC::Constant
============

:bdg-link-secondary-line:`src/BC/Constant.H <../../doxygen/BC_2Constant_8H_source.html>`

This is the most commonly used standard boundary condition implementation.
The name "Constant" refers to the invariance of the BC value or character along each face
of the simulation domain; however, you may cause a change in the value with time by using a
:ref:`Numeric::Interpolator::Linear` string.

The BC on each face is specified with a :code:`type` string that specifies the nature of 
the BC, and a :code:`val` that specifies the value.
By default, all types are Dirichlet and all values are 0.0.
The complete list of BC types are below:

`Dirichlet <https://en.wikipedia.org/wiki/Dirichlet_boundary_condition>`__  boundary condition
types can be specified with :code:`Dirichlet`, :code:`dirichlet`, :code:`EXT_DIR`.
`Neumann <https://en.wikipedia.org/wiki/Neumann_boundary_condition>`__ boundary condition
types are specified with :code:`Neumann`, :code:`neumann`.
`Periodic <https://en.wikipedia.org/wiki/Periodic_boundary_conditions>`__ boundary conditions
can be specified with :code:`Periodic`, :code:`periodic`, :code:`INT_DIR`.
**Important**: Ensure that your geometry is specified to be periodic using :code:`geometry.is_periodic`.
For instance, if periodic in x, set to :code:`1 0 0`

The BC values can be specified either as a number (e.g. :code:`1.0`) or using a linear interpolator
string (e.g. :code:`(0,1:2.3,-0.1)`).

The number of values and types must be either 0 (for defaults), 1 (to set the same for all field components)
or N (where N=number of field components).

.. raw:: html

   <div class="input-reference-list">
     <article class="input-reference-item" id="input-type-xlo-0e77ca20bc">
       <header class="input-reference-item-header">
         <a class="input-reference-name" href="../../doxygen/BC_2Constant_8H_source.html#l00173"><code>type.xlo</code></a>
         <div class="input-reference-badges"><span class="input-reference-badge input-reference-badge-default">dirichlet</span> <span class="input-reference-badge input-reference-badge-meta">conditional</span></div>
       </header>
       <p class="input-reference-description">BC type on the lower x edge (2d) face (3d)</p>
       <details class="input-reference-resolved">
         <summary>Names by executable <span>8 executables, 33 uses</span></summary>
         <div class="input-reference-resolved-body">
           <div class="input-reference-executable">
             <strong>alamo-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.type.xlo</code>
               <code>bc.eta.constant.type.xlo</code>
               <code>bc.phi.constant.type.xlo</code>
               <code>bc.temp.constant.type.xlo</code>
               <code>crack.bc.type.xlo</code>
               <code>eta.bc.constant.type.xlo</code>
               <code>pf.eta.bc.constant.type.xlo</code>
               <code>thermal.temp.bc.constant.type.xlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>alamo-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.type.xlo</code>
               <code>bc.eta.constant.type.xlo</code>
               <code>bc.phi.constant.type.xlo</code>
               <code>bc.temp.constant.type.xlo</code>
               <code>crack.bc.type.xlo</code>
               <code>eta.bc.constant.type.xlo</code>
               <code>pf.eta.bc.constant.type.xlo</code>
               <code>thermal.temp.bc.constant.type.xlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.type.xlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.type.xlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>hydro-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>density.bc.constant.type.xlo</code>
               <code>energy.bc.constant.type.xlo</code>
               <code>momentum.bc.constant.type.xlo</code>
               <code>pf.eta.bc.constant.type.xlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>sfi-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>allencahn.alpha.bc.constant.type.xlo</code>
               <code>dendrite.bc.phi.constant.type.xlo</code>
               <code>dendrite.bc.temp.constant.type.xlo</code>
               <code>flame.pf.eta.bc.constant.type.xlo</code>
               <code>flame.thermal.temp.bc.constant.type.xlo</code>
               <code>hydro.density.bc.constant.type.xlo</code>
               <code>hydro.energy.bc.constant.type.xlo</code>
               <code>hydro.momentum.bc.constant.type.xlo</code>
               <code>hydro.pf.eta.bc.constant.type.xlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.type.xlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.type.xlo</code>
             </div>
           </div>
         </div>
       </details>
     </article>
     <article class="input-reference-item" id="input-type-xhi-b4e8869e8f">
       <header class="input-reference-item-header">
         <a class="input-reference-name" href="../../doxygen/BC_2Constant_8H_source.html#l00178"><code>type.xhi</code></a>
         <div class="input-reference-badges"><span class="input-reference-badge input-reference-badge-default">dirichlet</span> <span class="input-reference-badge input-reference-badge-meta">conditional</span></div>
       </header>
       <p class="input-reference-description">BC type on the upper x edge (2d) face (3d)</p>
       <details class="input-reference-resolved">
         <summary>Names by executable <span>8 executables, 33 uses</span></summary>
         <div class="input-reference-resolved-body">
           <div class="input-reference-executable">
             <strong>alamo-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.type.xhi</code>
               <code>bc.eta.constant.type.xhi</code>
               <code>bc.phi.constant.type.xhi</code>
               <code>bc.temp.constant.type.xhi</code>
               <code>crack.bc.type.xhi</code>
               <code>eta.bc.constant.type.xhi</code>
               <code>pf.eta.bc.constant.type.xhi</code>
               <code>thermal.temp.bc.constant.type.xhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>alamo-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.type.xhi</code>
               <code>bc.eta.constant.type.xhi</code>
               <code>bc.phi.constant.type.xhi</code>
               <code>bc.temp.constant.type.xhi</code>
               <code>crack.bc.type.xhi</code>
               <code>eta.bc.constant.type.xhi</code>
               <code>pf.eta.bc.constant.type.xhi</code>
               <code>thermal.temp.bc.constant.type.xhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.type.xhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.type.xhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>hydro-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>density.bc.constant.type.xhi</code>
               <code>energy.bc.constant.type.xhi</code>
               <code>momentum.bc.constant.type.xhi</code>
               <code>pf.eta.bc.constant.type.xhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>sfi-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>allencahn.alpha.bc.constant.type.xhi</code>
               <code>dendrite.bc.phi.constant.type.xhi</code>
               <code>dendrite.bc.temp.constant.type.xhi</code>
               <code>flame.pf.eta.bc.constant.type.xhi</code>
               <code>flame.thermal.temp.bc.constant.type.xhi</code>
               <code>hydro.density.bc.constant.type.xhi</code>
               <code>hydro.energy.bc.constant.type.xhi</code>
               <code>hydro.momentum.bc.constant.type.xhi</code>
               <code>hydro.pf.eta.bc.constant.type.xhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.type.xhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.type.xhi</code>
             </div>
           </div>
         </div>
       </details>
     </article>
     <article class="input-reference-item" id="input-type-ylo-1ac0dbf6ec">
       <header class="input-reference-item-header">
         <a class="input-reference-name" href="../../doxygen/BC_2Constant_8H_source.html#l00183"><code>type.ylo</code></a>
         <div class="input-reference-badges"><span class="input-reference-badge input-reference-badge-default">dirichlet</span> <span class="input-reference-badge input-reference-badge-meta">conditional</span></div>
       </header>
       <p class="input-reference-description">BC type on the lower y edge (2d) face (3d)</p>
       <details class="input-reference-resolved">
         <summary>Names by executable <span>8 executables, 33 uses</span></summary>
         <div class="input-reference-resolved-body">
           <div class="input-reference-executable">
             <strong>alamo-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.type.ylo</code>
               <code>bc.eta.constant.type.ylo</code>
               <code>bc.phi.constant.type.ylo</code>
               <code>bc.temp.constant.type.ylo</code>
               <code>crack.bc.type.ylo</code>
               <code>eta.bc.constant.type.ylo</code>
               <code>pf.eta.bc.constant.type.ylo</code>
               <code>thermal.temp.bc.constant.type.ylo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>alamo-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.type.ylo</code>
               <code>bc.eta.constant.type.ylo</code>
               <code>bc.phi.constant.type.ylo</code>
               <code>bc.temp.constant.type.ylo</code>
               <code>crack.bc.type.ylo</code>
               <code>eta.bc.constant.type.ylo</code>
               <code>pf.eta.bc.constant.type.ylo</code>
               <code>thermal.temp.bc.constant.type.ylo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.type.ylo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.type.ylo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>hydro-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>density.bc.constant.type.ylo</code>
               <code>energy.bc.constant.type.ylo</code>
               <code>momentum.bc.constant.type.ylo</code>
               <code>pf.eta.bc.constant.type.ylo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>sfi-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>allencahn.alpha.bc.constant.type.ylo</code>
               <code>dendrite.bc.phi.constant.type.ylo</code>
               <code>dendrite.bc.temp.constant.type.ylo</code>
               <code>flame.pf.eta.bc.constant.type.ylo</code>
               <code>flame.thermal.temp.bc.constant.type.ylo</code>
               <code>hydro.density.bc.constant.type.ylo</code>
               <code>hydro.energy.bc.constant.type.ylo</code>
               <code>hydro.momentum.bc.constant.type.ylo</code>
               <code>hydro.pf.eta.bc.constant.type.ylo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.type.ylo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.type.ylo</code>
             </div>
           </div>
         </div>
       </details>
     </article>
     <article class="input-reference-item" id="input-type-yhi-3724736011">
       <header class="input-reference-item-header">
         <a class="input-reference-name" href="../../doxygen/BC_2Constant_8H_source.html#l00188"><code>type.yhi</code></a>
         <div class="input-reference-badges"><span class="input-reference-badge input-reference-badge-default">dirichlet</span> <span class="input-reference-badge input-reference-badge-meta">conditional</span></div>
       </header>
       <p class="input-reference-description">BC type on the upper y edge (2d) face (3d)</p>
       <details class="input-reference-resolved">
         <summary>Names by executable <span>8 executables, 33 uses</span></summary>
         <div class="input-reference-resolved-body">
           <div class="input-reference-executable">
             <strong>alamo-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.type.yhi</code>
               <code>bc.eta.constant.type.yhi</code>
               <code>bc.phi.constant.type.yhi</code>
               <code>bc.temp.constant.type.yhi</code>
               <code>crack.bc.type.yhi</code>
               <code>eta.bc.constant.type.yhi</code>
               <code>pf.eta.bc.constant.type.yhi</code>
               <code>thermal.temp.bc.constant.type.yhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>alamo-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.type.yhi</code>
               <code>bc.eta.constant.type.yhi</code>
               <code>bc.phi.constant.type.yhi</code>
               <code>bc.temp.constant.type.yhi</code>
               <code>crack.bc.type.yhi</code>
               <code>eta.bc.constant.type.yhi</code>
               <code>pf.eta.bc.constant.type.yhi</code>
               <code>thermal.temp.bc.constant.type.yhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.type.yhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.type.yhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>hydro-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>density.bc.constant.type.yhi</code>
               <code>energy.bc.constant.type.yhi</code>
               <code>momentum.bc.constant.type.yhi</code>
               <code>pf.eta.bc.constant.type.yhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>sfi-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>allencahn.alpha.bc.constant.type.yhi</code>
               <code>dendrite.bc.phi.constant.type.yhi</code>
               <code>dendrite.bc.temp.constant.type.yhi</code>
               <code>flame.pf.eta.bc.constant.type.yhi</code>
               <code>flame.thermal.temp.bc.constant.type.yhi</code>
               <code>hydro.density.bc.constant.type.yhi</code>
               <code>hydro.energy.bc.constant.type.yhi</code>
               <code>hydro.momentum.bc.constant.type.yhi</code>
               <code>hydro.pf.eta.bc.constant.type.yhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.type.yhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.type.yhi</code>
             </div>
           </div>
         </div>
       </details>
     </article>
     <article class="input-reference-item" id="input-type-zlo-1f49d62507">
       <header class="input-reference-item-header">
         <a class="input-reference-name" href="../../doxygen/BC_2Constant_8H_source.html#l00193"><code>type.zlo</code></a>
         <div class="input-reference-badges"><span class="input-reference-badge input-reference-badge-default">dirichlet</span> <span class="input-reference-badge input-reference-badge-meta">conditional</span></div>
       </header>
       <p class="input-reference-description">BC type on the lower z face (processed but ignored in 2d to prevent unused input errors)</p>
       <details class="input-reference-resolved">
         <summary>Names by executable <span>8 executables, 33 uses</span></summary>
         <div class="input-reference-resolved-body">
           <div class="input-reference-executable">
             <strong>alamo-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.type.zlo</code>
               <code>bc.eta.constant.type.zlo</code>
               <code>bc.phi.constant.type.zlo</code>
               <code>bc.temp.constant.type.zlo</code>
               <code>crack.bc.type.zlo</code>
               <code>eta.bc.constant.type.zlo</code>
               <code>pf.eta.bc.constant.type.zlo</code>
               <code>thermal.temp.bc.constant.type.zlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>alamo-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.type.zlo</code>
               <code>bc.eta.constant.type.zlo</code>
               <code>bc.phi.constant.type.zlo</code>
               <code>bc.temp.constant.type.zlo</code>
               <code>crack.bc.type.zlo</code>
               <code>eta.bc.constant.type.zlo</code>
               <code>pf.eta.bc.constant.type.zlo</code>
               <code>thermal.temp.bc.constant.type.zlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.type.zlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.type.zlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>hydro-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>density.bc.constant.type.zlo</code>
               <code>energy.bc.constant.type.zlo</code>
               <code>momentum.bc.constant.type.zlo</code>
               <code>pf.eta.bc.constant.type.zlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>sfi-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>allencahn.alpha.bc.constant.type.zlo</code>
               <code>dendrite.bc.phi.constant.type.zlo</code>
               <code>dendrite.bc.temp.constant.type.zlo</code>
               <code>flame.pf.eta.bc.constant.type.zlo</code>
               <code>flame.thermal.temp.bc.constant.type.zlo</code>
               <code>hydro.density.bc.constant.type.zlo</code>
               <code>hydro.energy.bc.constant.type.zlo</code>
               <code>hydro.momentum.bc.constant.type.zlo</code>
               <code>hydro.pf.eta.bc.constant.type.zlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.type.zlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.type.zlo</code>
             </div>
           </div>
         </div>
       </details>
     </article>
     <article class="input-reference-item" id="input-type-zhi-5787253d9e">
       <header class="input-reference-item-header">
         <a class="input-reference-name" href="../../doxygen/BC_2Constant_8H_source.html#l00200"><code>type.zhi</code></a>
         <div class="input-reference-badges"><span class="input-reference-badge input-reference-badge-default">dirichlet</span> <span class="input-reference-badge input-reference-badge-meta">conditional</span></div>
       </header>
       <p class="input-reference-description">BC type on the upper z face (processed but ignored in 2d to prevent unused input errors)</p>
       <details class="input-reference-resolved">
         <summary>Names by executable <span>8 executables, 33 uses</span></summary>
         <div class="input-reference-resolved-body">
           <div class="input-reference-executable">
             <strong>alamo-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.type.zhi</code>
               <code>bc.eta.constant.type.zhi</code>
               <code>bc.phi.constant.type.zhi</code>
               <code>bc.temp.constant.type.zhi</code>
               <code>crack.bc.type.zhi</code>
               <code>eta.bc.constant.type.zhi</code>
               <code>pf.eta.bc.constant.type.zhi</code>
               <code>thermal.temp.bc.constant.type.zhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>alamo-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.type.zhi</code>
               <code>bc.eta.constant.type.zhi</code>
               <code>bc.phi.constant.type.zhi</code>
               <code>bc.temp.constant.type.zhi</code>
               <code>crack.bc.type.zhi</code>
               <code>eta.bc.constant.type.zhi</code>
               <code>pf.eta.bc.constant.type.zhi</code>
               <code>thermal.temp.bc.constant.type.zhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.type.zhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.type.zhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>hydro-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>density.bc.constant.type.zhi</code>
               <code>energy.bc.constant.type.zhi</code>
               <code>momentum.bc.constant.type.zhi</code>
               <code>pf.eta.bc.constant.type.zhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>sfi-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>allencahn.alpha.bc.constant.type.zhi</code>
               <code>dendrite.bc.phi.constant.type.zhi</code>
               <code>dendrite.bc.temp.constant.type.zhi</code>
               <code>flame.pf.eta.bc.constant.type.zhi</code>
               <code>flame.thermal.temp.bc.constant.type.zhi</code>
               <code>hydro.density.bc.constant.type.zhi</code>
               <code>hydro.energy.bc.constant.type.zhi</code>
               <code>hydro.momentum.bc.constant.type.zhi</code>
               <code>hydro.pf.eta.bc.constant.type.zhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.type.zhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.type.zhi</code>
             </div>
           </div>
         </div>
       </details>
     </article>
     <article class="input-reference-item" id="input-val-xlo-eca711334c">
       <header class="input-reference-item-header">
         <a class="input-reference-name" href="../../doxygen/BC_2Constant_8H_source.html#l00211"><code>val.xlo</code></a>
         <div class="input-reference-badges"><span class="input-reference-badge input-reference-badge-default">0.0</span> <span class="input-reference-badge input-reference-badge-meta">conditional</span></div>
       </header>
       <p class="input-reference-description">BC value on the lower x edge (2d) face (3d)</p>
       <details class="input-reference-resolved">
         <summary>Names by executable <span>8 executables, 33 uses</span></summary>
         <div class="input-reference-resolved-body">
           <div class="input-reference-executable">
             <strong>alamo-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.val.xlo</code>
               <code>bc.eta.constant.val.xlo</code>
               <code>bc.phi.constant.val.xlo</code>
               <code>bc.temp.constant.val.xlo</code>
               <code>crack.bc.val.xlo</code>
               <code>eta.bc.constant.val.xlo</code>
               <code>pf.eta.bc.constant.val.xlo</code>
               <code>thermal.temp.bc.constant.val.xlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>alamo-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.val.xlo</code>
               <code>bc.eta.constant.val.xlo</code>
               <code>bc.phi.constant.val.xlo</code>
               <code>bc.temp.constant.val.xlo</code>
               <code>crack.bc.val.xlo</code>
               <code>eta.bc.constant.val.xlo</code>
               <code>pf.eta.bc.constant.val.xlo</code>
               <code>thermal.temp.bc.constant.val.xlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.val.xlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.val.xlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>hydro-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>density.bc.constant.val.xlo</code>
               <code>energy.bc.constant.val.xlo</code>
               <code>momentum.bc.constant.val.xlo</code>
               <code>pf.eta.bc.constant.val.xlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>sfi-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>allencahn.alpha.bc.constant.val.xlo</code>
               <code>dendrite.bc.phi.constant.val.xlo</code>
               <code>dendrite.bc.temp.constant.val.xlo</code>
               <code>flame.pf.eta.bc.constant.val.xlo</code>
               <code>flame.thermal.temp.bc.constant.val.xlo</code>
               <code>hydro.density.bc.constant.val.xlo</code>
               <code>hydro.energy.bc.constant.val.xlo</code>
               <code>hydro.momentum.bc.constant.val.xlo</code>
               <code>hydro.pf.eta.bc.constant.val.xlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.val.xlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.val.xlo</code>
             </div>
           </div>
         </div>
       </details>
     </article>
     <article class="input-reference-item" id="input-val-xhi-24c8e2047a">
       <header class="input-reference-item-header">
         <a class="input-reference-name" href="../../doxygen/BC_2Constant_8H_source.html#l00221"><code>val.xhi</code></a>
         <div class="input-reference-badges"><span class="input-reference-badge input-reference-badge-default">0.0</span> <span class="input-reference-badge input-reference-badge-meta">conditional</span></div>
       </header>
       <p class="input-reference-description">BC value on the upper x edge (2d) face (3d)</p>
       <details class="input-reference-resolved">
         <summary>Names by executable <span>8 executables, 33 uses</span></summary>
         <div class="input-reference-resolved-body">
           <div class="input-reference-executable">
             <strong>alamo-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.val.xhi</code>
               <code>bc.eta.constant.val.xhi</code>
               <code>bc.phi.constant.val.xhi</code>
               <code>bc.temp.constant.val.xhi</code>
               <code>crack.bc.val.xhi</code>
               <code>eta.bc.constant.val.xhi</code>
               <code>pf.eta.bc.constant.val.xhi</code>
               <code>thermal.temp.bc.constant.val.xhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>alamo-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.val.xhi</code>
               <code>bc.eta.constant.val.xhi</code>
               <code>bc.phi.constant.val.xhi</code>
               <code>bc.temp.constant.val.xhi</code>
               <code>crack.bc.val.xhi</code>
               <code>eta.bc.constant.val.xhi</code>
               <code>pf.eta.bc.constant.val.xhi</code>
               <code>thermal.temp.bc.constant.val.xhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.val.xhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.val.xhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>hydro-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>density.bc.constant.val.xhi</code>
               <code>energy.bc.constant.val.xhi</code>
               <code>momentum.bc.constant.val.xhi</code>
               <code>pf.eta.bc.constant.val.xhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>sfi-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>allencahn.alpha.bc.constant.val.xhi</code>
               <code>dendrite.bc.phi.constant.val.xhi</code>
               <code>dendrite.bc.temp.constant.val.xhi</code>
               <code>flame.pf.eta.bc.constant.val.xhi</code>
               <code>flame.thermal.temp.bc.constant.val.xhi</code>
               <code>hydro.density.bc.constant.val.xhi</code>
               <code>hydro.energy.bc.constant.val.xhi</code>
               <code>hydro.momentum.bc.constant.val.xhi</code>
               <code>hydro.pf.eta.bc.constant.val.xhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.val.xhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.val.xhi</code>
             </div>
           </div>
         </div>
       </details>
     </article>
     <article class="input-reference-item" id="input-val-ylo-5070252634">
       <header class="input-reference-item-header">
         <a class="input-reference-name" href="../../doxygen/BC_2Constant_8H_source.html#l00227"><code>val.ylo</code></a>
         <div class="input-reference-badges"><span class="input-reference-badge input-reference-badge-default">0.0</span> <span class="input-reference-badge input-reference-badge-meta">conditional</span></div>
       </header>
       <p class="input-reference-description">BC value on the lower y edge (2d) face (3d)</p>
       <details class="input-reference-resolved">
         <summary>Names by executable <span>8 executables, 33 uses</span></summary>
         <div class="input-reference-resolved-body">
           <div class="input-reference-executable">
             <strong>alamo-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.val.ylo</code>
               <code>bc.eta.constant.val.ylo</code>
               <code>bc.phi.constant.val.ylo</code>
               <code>bc.temp.constant.val.ylo</code>
               <code>crack.bc.val.ylo</code>
               <code>eta.bc.constant.val.ylo</code>
               <code>pf.eta.bc.constant.val.ylo</code>
               <code>thermal.temp.bc.constant.val.ylo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>alamo-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.val.ylo</code>
               <code>bc.eta.constant.val.ylo</code>
               <code>bc.phi.constant.val.ylo</code>
               <code>bc.temp.constant.val.ylo</code>
               <code>crack.bc.val.ylo</code>
               <code>eta.bc.constant.val.ylo</code>
               <code>pf.eta.bc.constant.val.ylo</code>
               <code>thermal.temp.bc.constant.val.ylo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.val.ylo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.val.ylo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>hydro-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>density.bc.constant.val.ylo</code>
               <code>energy.bc.constant.val.ylo</code>
               <code>momentum.bc.constant.val.ylo</code>
               <code>pf.eta.bc.constant.val.ylo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>sfi-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>allencahn.alpha.bc.constant.val.ylo</code>
               <code>dendrite.bc.phi.constant.val.ylo</code>
               <code>dendrite.bc.temp.constant.val.ylo</code>
               <code>flame.pf.eta.bc.constant.val.ylo</code>
               <code>flame.thermal.temp.bc.constant.val.ylo</code>
               <code>hydro.density.bc.constant.val.ylo</code>
               <code>hydro.energy.bc.constant.val.ylo</code>
               <code>hydro.momentum.bc.constant.val.ylo</code>
               <code>hydro.pf.eta.bc.constant.val.ylo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.val.ylo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.val.ylo</code>
             </div>
           </div>
         </div>
       </details>
     </article>
     <article class="input-reference-item" id="input-val-yhi-5091b542bc">
       <header class="input-reference-item-header">
         <a class="input-reference-name" href="../../doxygen/BC_2Constant_8H_source.html#l00233"><code>val.yhi</code></a>
         <div class="input-reference-badges"><span class="input-reference-badge input-reference-badge-default">0.0</span> <span class="input-reference-badge input-reference-badge-meta">conditional</span></div>
       </header>
       <p class="input-reference-description">BC value on the upper y edge (2d) face (3d)</p>
       <details class="input-reference-resolved">
         <summary>Names by executable <span>8 executables, 33 uses</span></summary>
         <div class="input-reference-resolved-body">
           <div class="input-reference-executable">
             <strong>alamo-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.val.yhi</code>
               <code>bc.eta.constant.val.yhi</code>
               <code>bc.phi.constant.val.yhi</code>
               <code>bc.temp.constant.val.yhi</code>
               <code>crack.bc.val.yhi</code>
               <code>eta.bc.constant.val.yhi</code>
               <code>pf.eta.bc.constant.val.yhi</code>
               <code>thermal.temp.bc.constant.val.yhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>alamo-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.val.yhi</code>
               <code>bc.eta.constant.val.yhi</code>
               <code>bc.phi.constant.val.yhi</code>
               <code>bc.temp.constant.val.yhi</code>
               <code>crack.bc.val.yhi</code>
               <code>eta.bc.constant.val.yhi</code>
               <code>pf.eta.bc.constant.val.yhi</code>
               <code>thermal.temp.bc.constant.val.yhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.val.yhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.val.yhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>hydro-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>density.bc.constant.val.yhi</code>
               <code>energy.bc.constant.val.yhi</code>
               <code>momentum.bc.constant.val.yhi</code>
               <code>pf.eta.bc.constant.val.yhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>sfi-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>allencahn.alpha.bc.constant.val.yhi</code>
               <code>dendrite.bc.phi.constant.val.yhi</code>
               <code>dendrite.bc.temp.constant.val.yhi</code>
               <code>flame.pf.eta.bc.constant.val.yhi</code>
               <code>flame.thermal.temp.bc.constant.val.yhi</code>
               <code>hydro.density.bc.constant.val.yhi</code>
               <code>hydro.energy.bc.constant.val.yhi</code>
               <code>hydro.momentum.bc.constant.val.yhi</code>
               <code>hydro.pf.eta.bc.constant.val.yhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.val.yhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.val.yhi</code>
             </div>
           </div>
         </div>
       </details>
     </article>
     <article class="input-reference-item" id="input-val-zlo-ea597cc278">
       <header class="input-reference-item-header">
         <a class="input-reference-name" href="../../doxygen/BC_2Constant_8H_source.html#l00238"><code>val.zlo</code></a>
         <div class="input-reference-badges"><span class="input-reference-badge input-reference-badge-default">0.0</span> <span class="input-reference-badge input-reference-badge-meta">conditional</span></div>
       </header>
       <p class="input-reference-description">BC value on the lower z face (processed but ignored in 2d to prevent unused input errors)</p>
       <details class="input-reference-resolved">
         <summary>Names by executable <span>8 executables, 33 uses</span></summary>
         <div class="input-reference-resolved-body">
           <div class="input-reference-executable">
             <strong>alamo-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.val.zlo</code>
               <code>bc.eta.constant.val.zlo</code>
               <code>bc.phi.constant.val.zlo</code>
               <code>bc.temp.constant.val.zlo</code>
               <code>crack.bc.val.zlo</code>
               <code>eta.bc.constant.val.zlo</code>
               <code>pf.eta.bc.constant.val.zlo</code>
               <code>thermal.temp.bc.constant.val.zlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>alamo-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.val.zlo</code>
               <code>bc.eta.constant.val.zlo</code>
               <code>bc.phi.constant.val.zlo</code>
               <code>bc.temp.constant.val.zlo</code>
               <code>crack.bc.val.zlo</code>
               <code>eta.bc.constant.val.zlo</code>
               <code>pf.eta.bc.constant.val.zlo</code>
               <code>thermal.temp.bc.constant.val.zlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.val.zlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.val.zlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>hydro-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>density.bc.constant.val.zlo</code>
               <code>energy.bc.constant.val.zlo</code>
               <code>momentum.bc.constant.val.zlo</code>
               <code>pf.eta.bc.constant.val.zlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>sfi-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>allencahn.alpha.bc.constant.val.zlo</code>
               <code>dendrite.bc.phi.constant.val.zlo</code>
               <code>dendrite.bc.temp.constant.val.zlo</code>
               <code>flame.pf.eta.bc.constant.val.zlo</code>
               <code>flame.thermal.temp.bc.constant.val.zlo</code>
               <code>hydro.density.bc.constant.val.zlo</code>
               <code>hydro.energy.bc.constant.val.zlo</code>
               <code>hydro.momentum.bc.constant.val.zlo</code>
               <code>hydro.pf.eta.bc.constant.val.zlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.val.zlo</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.val.zlo</code>
             </div>
           </div>
         </div>
       </details>
     </article>
     <article class="input-reference-item" id="input-val-zhi-d755c8d45f">
       <header class="input-reference-item-header">
         <a class="input-reference-name" href="../../doxygen/BC_2Constant_8H_source.html#l00246"><code>val.zhi</code></a>
         <div class="input-reference-badges"><span class="input-reference-badge input-reference-badge-default">0.0</span> <span class="input-reference-badge input-reference-badge-meta">conditional</span></div>
       </header>
       <p class="input-reference-description">BC value on the upper z face (processed but ignored in 2d to prevent unused input errors)</p>
       <details class="input-reference-resolved">
         <summary>Names by executable <span>8 executables, 33 uses</span></summary>
         <div class="input-reference-resolved-body">
           <div class="input-reference-executable">
             <strong>alamo-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.val.zhi</code>
               <code>bc.eta.constant.val.zhi</code>
               <code>bc.phi.constant.val.zhi</code>
               <code>bc.temp.constant.val.zhi</code>
               <code>crack.bc.val.zhi</code>
               <code>eta.bc.constant.val.zhi</code>
               <code>pf.eta.bc.constant.val.zhi</code>
               <code>thermal.temp.bc.constant.val.zhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>alamo-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>alpha.bc.constant.val.zhi</code>
               <code>bc.eta.constant.val.zhi</code>
               <code>bc.phi.constant.val.zhi</code>
               <code>bc.temp.constant.val.zhi</code>
               <code>crack.bc.val.zhi</code>
               <code>eta.bc.constant.val.zhi</code>
               <code>pf.eta.bc.constant.val.zhi</code>
               <code>thermal.temp.bc.constant.val.zhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.val.zhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>fracture-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>crack.bc.val.zhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>hydro-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>density.bc.constant.val.zhi</code>
               <code>energy.bc.constant.val.zhi</code>
               <code>momentum.bc.constant.val.zhi</code>
               <code>pf.eta.bc.constant.val.zhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>sfi-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>allencahn.alpha.bc.constant.val.zhi</code>
               <code>dendrite.bc.phi.constant.val.zhi</code>
               <code>dendrite.bc.temp.constant.val.zhi</code>
               <code>flame.pf.eta.bc.constant.val.zhi</code>
               <code>flame.thermal.temp.bc.constant.val.zhi</code>
               <code>hydro.density.bc.constant.val.zhi</code>
               <code>hydro.energy.bc.constant.val.zhi</code>
               <code>hydro.momentum.bc.constant.val.zhi</code>
               <code>hydro.pf.eta.bc.constant.val.zhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-2d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.val.zhi</code>
             </div>
           </div>
           <div class="input-reference-executable">
             <strong>thermoelastic-3d-coverage-g++</strong>
             <div class="input-reference-paths">
               <code>hc.bc.temp.constant.val.zhi</code>
             </div>
           </div>
         </div>
       </details>
     </article>
   </div>