KokkosLinearFVAdvection

This is the Kokkos version of LinearFVAdvection for first-order upwind interpolation.

note

KokkosLinearFVAdvection currently supports constant velocities and first-order upwind interpolation.

Example Syntax

  [advection]
    type = KokkosLinearFVAdvection
    variable = u
    velocity = '0.5 0 0'
  []

Input Parameters

variableThe name of the variable whose linear system this object contributes to
C++ Type:LinearVariableName
Unit:(no unit assumed)
Controllable:No
Description:The name of the variable whose linear system this object contributes to
velocityConstant advection velocity.
C++ Type:libMesh::VectorValue<double>
Unit:(no unit assumed)
Controllable:No
Description:Constant advection velocity.

Required Parameters

blockThe list of blocks (ids or names) that this object will be applied
C++ Type:std::vector<SubdomainName>
Controllable:No
Description:The list of blocks (ids or names) that this object will be applied

Optional Parameters

absolute_value_vector_tagsThe tags for the vectors this residual object should fill with the absolute value of the residual contribution
C++ Type:std::vector<TagName>
Controllable:No
Description:The tags for the vectors this residual object should fill with the absolute value of the residual contribution
extra_matrix_tagsThe extra tags for the matrices this Kernel should fill
C++ Type:std::vector<TagName>
Controllable:No
Description:The extra tags for the matrices this Kernel should fill
extra_vector_tagsThe extra tags for the vectors this Kernel should fill
C++ Type:std::vector<TagName>
Controllable:No
Description:The extra tags for the vectors this Kernel should fill
matrix_onlyFalseWhether this object is only doing assembly to matrices (no vectors)
Default:False
C++ Type:bool
Controllable:No
Description:Whether this object is only doing assembly to matrices (no vectors)
matrix_tagssystemThe tag for the matrices this Kernel should fill
Default:system
C++ Type:MultiMooseEnum
Options:nontime, system
Controllable:No
Description:The tag for the matrices this Kernel should fill
vector_tagsrhsThe tag for the vectors this Kernel should fill
Default:rhs
C++ Type:MultiMooseEnum
Options:rhs, time
Controllable:No
Description:The tag for the vectors this Kernel should fill

Contribution To Tagged Field Data Parameters

control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
Controllable:No
Description:Adds user-defined labels for accessing object parameters via control logic.
enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Controllable:Yes
Description:Set the enabled status of the MooseObject.
implicitTrueDetermines whether this object is calculated using an implicit or explicit form
Default:True
C++ Type:bool
Controllable:No
Description:Determines whether this object is calculated using an implicit or explicit form
seed0The seed for the master random number generator
Default:0
C++ Type:unsigned int
Controllable:No
Description:The seed for the master random number generator

Advanced Parameters

Input Files

(test/tests/kokkos/linearfvkernels/advection-diffusion/kokkos_advection_diffusion-1d.i)

(test/tests/kokkos/linearfvkernels/advection-diffusion/kokkos_advection_diffusion-1d.i)

[Mesh]
  [gmg]
    type = GeneratedMeshGenerator
    dim = 1
    nx = 2
  []
[]

[Problem]
  linear_sys_names = 'u_sys'
[]

[Variables]
  [u]
    type = MooseLinearVariableFVReal
    solver_sys = 'u_sys'
  []
[]

[LinearFVKernels]
  [advection]
    type = KokkosLinearFVAdvection
    variable = u
    velocity = '0.5 0 0'
  []
  [diffusion]
    type = KokkosLinearFVDiffusion
    variable = u
    diffusion_coeff = unit_fn
  []
  [source]
    type = KokkosLinearFVSource
    variable = u
    source_density = source_func_kokkos
    scaling_factor = unit_fn
  []
[]

[LinearFVBCs]
  [inflow]
    type = KokkosLinearFVFunctorDirichletBC
    variable = u
    boundary = left
    functor = analytic_solution_kokkos
  []
  [outflow]
    type = KokkosLinearFVFunctorNeumannBC
    variable = u
    boundary = right
    functor = zero_fn
  []
[]

[Functions]
  [unit_fn]
    type = KokkosParsedFunction
    expression = 1.0
  []
  [zero_fn]
    type = KokkosParsedFunction
    expression = 0.0
  []
  [source_func_kokkos]
    type = KokkosParsedFunction
    expression = 'x - 3.0'
  []
  [analytic_solution_kokkos]
    type = KokkosParsedFunction
    expression = '1.0 + (1.0 - x) * (1.0 - x)'
  []
  [analytic_solution]
    type = ParsedFunction
    expression = '1.0 + (1.0 - x) * (1.0 - x)'
  []
[]

[Postprocessors]
  [h]
    type = AverageElementSize
    execute_on = FINAL
  []
  [error]
    type = ElementL2FunctorError
    approximate = u
    exact = analytic_solution
    execute_on = FINAL
  []
[]

[Executioner]
  type = Steady
  system_names = u_sys
  l_tol = 1e-10
  petsc_options_iname = '-pc_type -pc_factor_shift_type -pc_factor_shift_amount -pc_factor_mat_solver_type -mat_mumps_icntl_14'
  petsc_options_value = 'lu       NONZERO               1e-12                     mumps                    50'
[]

[Outputs]
  [csv]
    type = CSV
    execute_on = FINAL
  []
  [console]
    type = Console
    execute_postprocessors_on = 'FINAL'
  []
[]

(test/tests/kokkos/linearfvkernels/advection-diffusion/kokkos_advection_diffusion-1d.i)

[Mesh]
  [gmg]
    type = GeneratedMeshGenerator
    dim = 1
    nx = 2
  []
[]

[Problem]
  linear_sys_names = 'u_sys'
[]

[Variables]
  [u]
    type = MooseLinearVariableFVReal
    solver_sys = 'u_sys'
  []
[]

[LinearFVKernels]
  [advection]
    type = KokkosLinearFVAdvection
    variable = u
    velocity = '0.5 0 0'
  []
  [diffusion]
    type = KokkosLinearFVDiffusion
    variable = u
    diffusion_coeff = unit_fn
  []
  [source]
    type = KokkosLinearFVSource
    variable = u
    source_density = source_func_kokkos
    scaling_factor = unit_fn
  []
[]

[LinearFVBCs]
  [inflow]
    type = KokkosLinearFVFunctorDirichletBC
    variable = u
    boundary = left
    functor = analytic_solution_kokkos
  []
  [outflow]
    type = KokkosLinearFVFunctorNeumannBC
    variable = u
    boundary = right
    functor = zero_fn
  []
[]

[Functions]
  [unit_fn]
    type = KokkosParsedFunction
    expression = 1.0
  []
  [zero_fn]
    type = KokkosParsedFunction
    expression = 0.0
  []
  [source_func_kokkos]
    type = KokkosParsedFunction
    expression = 'x - 3.0'
  []
  [analytic_solution_kokkos]
    type = KokkosParsedFunction
    expression = '1.0 + (1.0 - x) * (1.0 - x)'
  []
  [analytic_solution]
    type = ParsedFunction
    expression = '1.0 + (1.0 - x) * (1.0 - x)'
  []
[]

[Postprocessors]
  [h]
    type = AverageElementSize
    execute_on = FINAL
  []
  [error]
    type = ElementL2FunctorError
    approximate = u
    exact = analytic_solution
    execute_on = FINAL
  []
[]

[Executioner]
  type = Steady
  system_names = u_sys
  l_tol = 1e-10
  petsc_options_iname = '-pc_type -pc_factor_shift_type -pc_factor_shift_amount -pc_factor_mat_solver_type -mat_mumps_icntl_14'
  petsc_options_value = 'lu       NONZERO               1e-12                     mumps                    50'
[]

[Outputs]
  [csv]
    type = CSV
    execute_on = FINAL
  []
  [console]
    type = Console
    execute_postprocessors_on = 'FINAL'
  []
[]

Example Syntax
Input Parameters
Input Files