CahnHilliard

This problem tests the following integrator:

Integrator::CahnHilliard

Example output:

2d-serial-level

	Two-dimensional
	Serial
	Validated using check script
	./bin/alamo-2d-g++ tests/CahnHilliard/input stop_time="0.01"

2d-serial-fft

	Two-dimensional
	Serial
	Validated using check script
	./bin/alamo-2d-g++ tests/CahnHilliard/input max_level="0" amr.n_cell="256 256 256" stop_time="0.01" timestep="0.0001" method="spectral"

Input file (../../tests/CahnHilliard/input)

#@ [2d-serial-level]
#@ dim    = 2
#@ nprocs = 1
#@ check  = true
#@ check-file = reference/reference-2d.csv
#@ args   = stop_time=0.01
#@
#@ [2d-serial-fft]
#@ dim = 2
#@ fft  = true
#@ check-file = reference/reference-2d-fft.csv
#@ args = max_level=0
#@ args = amr.n_cell=256 256 256
#@ args = stop_time=0.01
#@ args = timestep=0.0001
#@ args = method=spectral

alamo.program = cahnhilliard

### OUTPUT ###

plot_file = tests/CahnHilliard/output

### MESHING ###

amr.plot_dt = 0.0001
amr.max_level = 1
amr.max_grid_size = 500000
amr.blocking_factor = 2
amr.grid_eff = 0.8
amr.n_cell = 64 64 0

geometry.prob_lo = -0.5 -0.5  -0.5
geometry.prob_hi =  0.5  0.5  -0.5

geometry.is_periodic = 1 1 1

timestep  = 0.000001
stop_time = 1.0

eta.bc.constant.type.xlo = periodic
eta.bc.constant.type.xhi = periodic
eta.bc.constant.type.ylo = periodic
eta.bc.constant.type.yhi = periodic
eta.bc.constant.type.zlo = periodic
eta.bc.constant.type.zhi = periodic

eta.ic.random.offset = -1.0
eta.ic.random.mult   = 2.0

gamma = 0.00005

refinement_threshold = 0.01