FEProblem

The FEProblem class represents a normal (default) Problem class encompassing the necessary objects for the actual physics solve. The FEProblem object contains one NonlinearSystem and one AuxiliarySystem.

A normal (default) Problem object that contains a single NonlinearSystem and a single AuxiliarySystem object.

Input Parameters

  • boundary_restricted_elem_integrity_checkTrueSet to false to disable checking of boundary restricted elemental object variable dependencies, e.g. are the variable dependencies defined on the selected boundaries?

    Default:True

    C++ Type:bool

    Controllable:No

    Description:Set to false to disable checking of boundary restricted elemental object variable dependencies, e.g. are the variable dependencies defined on the selected boundaries?

  • boundary_restricted_node_integrity_checkTrueSet to false to disable checking of boundary restricted nodal object variable dependencies, e.g. are the variable dependencies defined on the selected boundaries?

    Default:True

    C++ Type:bool

    Controllable:No

    Description:Set to false to disable checking of boundary restricted nodal object variable dependencies, e.g. are the variable dependencies defined on the selected boundaries?

  • error_on_jacobian_nonzero_reallocationFalseThis causes PETSc to error if it had to reallocate memory in the Jacobian matrix due to not having enough nonzeros

    Default:False

    C++ Type:bool

    Controllable:No

    Description:This causes PETSc to error if it had to reallocate memory in the Jacobian matrix due to not having enough nonzeros

  • extra_tag_matricesExtra matrices to add to the system that can be filled by objects which compute residuals and Jacobians (Kernels, BCs, etc.) by setting tags on them.

    C++ Type:std::vector<TagName>

    Controllable:No

    Description:Extra matrices to add to the system that can be filled by objects which compute residuals and Jacobians (Kernels, BCs, etc.) by setting tags on them.

  • extra_tag_solutionsExtra solution vectors to add to the system that can be used by objects for coupling variable values stored in them.

    C++ Type:std::vector<TagName>

    Controllable:No

    Description:Extra solution vectors to add to the system that can be used by objects for coupling variable values stored in them.

  • extra_tag_vectorsExtra vectors to add to the system that can be filled by objects which compute residuals and Jacobians (Kernels, BCs, etc.) by setting tags on them.

    C++ Type:std::vector<TagName>

    Controllable:No

    Description:Extra vectors to add to the system that can be filled by objects which compute residuals and Jacobians (Kernels, BCs, etc.) by setting tags on them.

  • force_restartFalseEXPERIMENTAL: If true, a sub_app may use a restart file instead of using of using the master backup file

    Default:False

    C++ Type:bool

    Controllable:No

    Description:EXPERIMENTAL: If true, a sub_app may use a restart file instead of using of using the master backup file

  • fv_bcs_integrity_checkTrueSet to false to disable checking of overlapping Dirichlet and Flux BCs and/or multiple DirichletBCs per sideset

    Default:True

    C++ Type:bool

    Controllable:No

    Description:Set to false to disable checking of overlapping Dirichlet and Flux BCs and/or multiple DirichletBCs per sideset

  • ignore_zeros_in_jacobianFalseDo not explicitly store zero values in the Jacobian matrix if true

    Default:False

    C++ Type:bool

    Controllable:No

    Description:Do not explicitly store zero values in the Jacobian matrix if true

  • kernel_coverage_checkTrueSet to false to disable kernel->subdomain coverage check

    Default:True

    C++ Type:bool

    Controllable:No

    Description:Set to false to disable kernel->subdomain coverage check

  • material_coverage_checkTrueSet to false to disable material->subdomain coverage check

    Default:True

    C++ Type:bool

    Controllable:No

    Description:Set to false to disable material->subdomain coverage check

  • material_dependency_checkTrueSet to false to disable material dependency check

    Default:True

    C++ Type:bool

    Controllable:No

    Description:Set to false to disable material dependency check

  • near_null_space_dimension0The dimension of the near nullspace

    Default:0

    C++ Type:unsigned int

    Controllable:No

    Description:The dimension of the near nullspace

  • null_space_dimension0The dimension of the nullspace

    Default:0

    C++ Type:unsigned int

    Controllable:No

    Description:The dimension of the nullspace

  • parallel_barrier_messagingFalseDisplays messaging from parallel barrier notifications when executing or transferring to/from Multiapps (default: false)

    Default:False

    C++ Type:bool

    Controllable:No

    Description:Displays messaging from parallel barrier notifications when executing or transferring to/from Multiapps (default: false)

  • previous_nl_solution_requiredFalseTrue to indicate that this calculation requires a solution vector for storing the prvious nonlinear iteration.

    Default:False

    C++ Type:bool

    Controllable:No

    Description:True to indicate that this calculation requires a solution vector for storing the prvious nonlinear iteration.

  • restart_file_baseFile base name used for restart (e.g. / or /LATEST to grab the latest file available)

    C++ Type:FileNameNoExtension

    Controllable:No

    Description:File base name used for restart (e.g. / or /LATEST to grab the latest file available)

  • skip_additional_restart_dataFalseTrue to skip additional data in equation system for restart. It is useful for starting a transient calculation with a steady-state solution

    Default:False

    C++ Type:bool

    Controllable:No

    Description:True to skip additional data in equation system for restart. It is useful for starting a transient calculation with a steady-state solution

  • skip_nl_system_checkFalseTrue to skip the NonlinearSystem check for work to do (e.g. Make sure that there are variables to solve for).

    Default:False

    C++ Type:bool

    Controllable:No

    Description:True to skip the NonlinearSystem check for work to do (e.g. Make sure that there are variables to solve for).

  • solveTrueWhether or not to actually solve the Nonlinear system. This is handy in the case that all you want to do is execute AuxKernels, Transfers, etc. without actually solving anything

    Default:True

    C++ Type:bool

    Controllable:Yes

    Description:Whether or not to actually solve the Nonlinear system. This is handy in the case that all you want to do is execute AuxKernels, Transfers, etc. without actually solving anything

  • transpose_null_space_dimension0The dimension of the transpose nullspace

    Default:0

    C++ Type:unsigned int

    Controllable:No

    Description:The dimension of the transpose nullspace

  • use_nonlinearTrueDetermines whether to use a Nonlinear vs a Eigenvalue system (Automatically determined based on executioner)

    Default:True

    C++ Type:bool

    Controllable:No

    Description:Determines whether to use a Nonlinear vs a Eigenvalue system (Automatically determined based on executioner)

  • verbose_multiappsFalseSet to True to enable verbose screen printing related to MultiApps

    Default:False

    C++ Type:bool

    Controllable:No

    Description:Set to True to enable verbose screen printing related to MultiApps

Optional 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.

  • default_ghostingFalseWhether or not to use libMesh's default amount of algebraic and geometric ghosting

    Default:False

    C++ Type:bool

    Controllable:No

    Description:Whether or not to use libMesh's default amount of algebraic and geometric ghosting

  • enableTrueSet the enabled status of the MooseObject.

    Default:True

    C++ Type:bool

    Controllable:No

    Description:Set the enabled status of the MooseObject.

Advanced Parameters

References

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