IC::PerturbedInterface
Initialize a perturbed interface using Fourier Modes
Notes: 1. todo Extend this class to allow for 3D perturbations, currently only 2D are allowed 2. todo Allow for cosine (or complex exponential) expansions rather than just sin. 3. note This is a two grain only initial condition. 4. note This replaces the depricated “perturbed_bar” initial condition from previous versions
The interface is defined as the \(x=0\) plane (2D), or the \(x=0,z=0\) plane (3D). The equation for the interface is given by \(y(x,z) = \sum_{n\in \{n_1,\ldots,n_N\}} A_n \sin(n\pi x/L_x)\) where \(A_n\) are the amplitudes (stored in #wave_amplitudes), \(n_1,\ldots,n_N\subset\mathbb{Z}_+\) are wave numbers (stored in #wave_numbers), and \(L_x\) is the length in the x direction (obtained using the #geom object).
Grain 1 is defined as being above \(y(x,z)\), Grain 2 is defined as being below.
wave_numbers
Wave numbers
Names by executable 2 executables, 2 uses
ic.perturbedinterface.wave_numbers
ic.perturbedinterface.wave_numbers
wave_amplitudes
Wave amplitudes
Names by executable 2 executables, 2 uses
ic.perturbedinterface.wave_amplitudes
ic.perturbedinterface.wave_amplitudes
normal
Which axis is normal to the interface (x,y,z)
Names by executable 2 executables, 2 uses
ic.perturbedinterface.normal
ic.perturbedinterface.normal
offset
Interface offset from origin
Names by executable 2 executables, 2 uses
ic.perturbedinterface.offset
ic.perturbedinterface.offset
reverse
If true, flip the interface (default:false)
Names by executable 2 executables, 2 uses
ic.perturbedinterface.reverse
ic.perturbedinterface.reverse
mollifier
Mollifier (options: dirac, [gaussian])
Names by executable 2 executables, 2 uses
ic.perturbedinterface.mollifier
ic.perturbedinterface.mollifier