Diffusion Physics syntax
The [Diffusion]
block is a sub-block of the [Physics]
block. DiffusionPhysicsBase
-derived classes, such as DiffusionCG can be created, nested under the relevant discretization sub-block.
For example, a DiffusionCG can be created inside the Physics/Diffusion/ContinuousGalerkin block.
[Physics<<<{"href": "../index.html"}>>>]
[Diffusion<<<{"href": "index.html"}>>>]
[ContinuousGalerkin<<<{"href": "ContinuousGalerkin/index.html"}>>>]
[diff]
source_functor<<<{"description": "Source term in the diffusion problem. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number."}>>> = 2
diffusivity_matprop<<<{"description": "Material property defining the diffusion coefficient"}>>> = '1'
# Test all the ways of setting the boundary conditions
neumann_boundaries<<<{"description": "Boundaries on which to apply a diffusive flux"}>>> = 'left_to_0 right_to_0 top_to_0 bottom_to_0'
boundary_fluxes<<<{"description": "Functors to compute the diffusive flux on each Neumann boundary'"}>>> = '1 flux_pp flux_function flux_variable'
dirichlet_boundaries<<<{"description": "Boundaries on which to apply a fixed value"}>>> = 'left_to_1 right_to_1 top_to_1 bottom_to_1'
boundary_values<<<{"description": "Functors to compute the diffusive flux on each Dirichlet boundary'"}>>> = '2 value_pp value_function value_variable'
[]
[]
[]
[]
(moose/test/tests/physics/diffusion_cg.i)