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myCHsolver_direct.i
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myCHsolver_direct.i
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[Mesh]
type = GeneratedMesh
dim = 2
nx = 150
ny = 150
xmax = 60
ymax = 60
[]
[Modules]
[./PhaseField]
[./Conserved]
[./c]
free_energy = fbulk
mobility = M
kappa = kappa_c
solve_type = DIRECT
[../]
[../]
[../]
[]
[AuxVariables]
[./local_energy]
order = CONSTANT
family = MONOMIAL
[../]
[]
[ICs]
[./cIC]
type = RandomIC
variable = c
#min = -0.1
#max = 0.1
min = 0.45
max = 0.55
[../]
#[./MyIc1]
# type = SpecifiedSmoothCircleIC
# variable = c
# x_positions = '40 15 45'
# y_positions = '30 15 2'
# z_positions = ' 0 0 0'
# radii = '3 2 5'
# invalue = 1.0
# outvalue = 0.1
#[../]
[]
[AuxKernels]
[./local_energy]
type = TotalFreeEnergy
variable = local_energy
f_name = fbulk
interfacial_vars = c
kappa_names = kappa_c
execute_on = timestep_end
[../]
[]
[BCs]
[./Periodic]
[./all]
auto_direction = 'x y'
[../]
[../]
[]
[Materials]
[./mat]
type = GenericConstantMaterial
prop_names = 'M kappa_c'
#prop_values = '1.0 0.5'
prop_values = '0.75 1.0'
[../]
[./free_energy]
type = DerivativeParsedMaterial
f_name = fbulk
args = c
constant_names = 'W kbT'
#constant_names = chem_pot
#constant_expressions = 1.0/2^2
constant_expressions = '1 0.1'
#const_names = kbt
#constant_expressions = 0.1
#function = W*(1-c)^2*(1+c)^2
#function = chem_pot*(1-c)^2*(1+c)^2
#function = chem_pot*(c)^2*(1-c)^2
function = W*c*(1-c)+kbT*(c*plog(c,1e-4)+(1-c)*plog(1-c,1e-4))
enable_jit = true
outputs = exodus
[../]
[]
[Postprocessors]
[./top]
#type = SideIntegralVariablePostprocessor
type = ElementIntegralVariablePostprocessor
variable = c
#boundary = top
[../]
[./total_free_energy]
type = ElementIntegralVariablePostprocessor
variable = local_energy
[../]
[]
[Executioner]
type = Transient
solve_type = NEWTON
scheme = bdf2
petsc_options_iname = '-pc_type -sub_pc_type'
petsc_options_value = 'asm lu '
l_max_its = 30
l_tol = 1e-4
nl_max_its = 20
nl_rel_tol = 1e-9
dt = 2.0
#end_time = 20.0
end_time = 20.0
[]
[Outputs]
exodus = true
print_perf_log = true
csv = true
[]