- blockThe list of subdomains (names or ids) that this object will be restricted to. Leave empty to apply to all subdomains.
C++ Type:std::vector<SubdomainName>
Controllable:No
Description:The list of subdomains (names or ids) that this object will be restricted to. Leave empty to apply to all subdomains.
- variableVariable labelling the weak form this kernel is added to
C++ Type:VariableName
Unit:(no unit assumed)
Controllable:No
Description:Variable labelling the weak form this kernel is added to
- vector_coefficient1. 1. 1.Name of body force density f. A functor is any of the following: a variable, an MFEM material property, a function, a postprocessor or a numeric vector value (enclosed in curly braces).
Default:1. 1. 1.
C++ Type:MFEMVectorCoefficientName
Controllable:No
Description:Name of body force density f. A functor is any of the following: a variable, an MFEM material property, a function, a postprocessor or a numeric vector value (enclosed in curly braces).
MFEMVectorDomainLFKernel
Adds the domain integrator to an MFEM problem for the linear form arising from the weak form of the forcing term .
Overview
Adds the domain integrator for integrating the linear form
where is the test variable and is a vector forcing coefficient.
This term arises from the weak form of the forcing term
Example Input File Syntax
[Kernels<<<{"href": "../../../syntax/Kernels/index.html"}>>>]
[diff]
type = MFEMLinearElasticityKernel<<<{"description": "The isotropic linear elasticity operator with weak form $(c_{ikjl} \\nabla u_j, \\nabla v_i)$, to be added to an MFEM problem, where $c_{ikjl}$ is the isotropic elasticity tensor, $c_{ikjl} = \\lambda \\delta_{ik} \\delta_{jl} + \\mu \\left( \\delta_{ij} \\delta_{kl} + \\delta_{il} \\delta_{jk} \\right)$, $\\lambda$ is the first Lame parameter, $\\lambda = \\frac{E\\nu}{(1-2\\nu)(1+\\nu)}$, $\\mu$ is the second Lame parameter, $\\mu = \\frac{E}{2(1+\\nu)}$, where $E$ is Young's modulus and $\\nu$ is Poisson's ratio.", "href": "MFEMLinearElasticityKernel.html"}>>>
variable<<<{"description": "Variable labelling the weak form this kernel is added to"}>>> = displacement
lambda<<<{"description": "Name of MFEM Lame constant lambda to multiply the div(u)*I term by. A functor is any of the following: a variable, an MFEM material property, a function, a postprocessor or a number."}>>> = lambda
mu<<<{"description": "Name of MFEM Lame constant mu to multiply the gradients term by. A functor is any of the following: a variable, an MFEM material property, a function, a postprocessor or a number."}>>> = mu
[]
[gravity]
type = MFEMVectorDomainLFKernel<<<{"description": "Adds the domain integrator to an MFEM problem for the linear form $(\\vec f, \\vec v)_\\Omega$ arising from the weak form of the forcing term $\\vec f$.", "href": "MFEMVectorDomainLFKernel.html"}>>>
variable<<<{"description": "Variable labelling the weak form this kernel is added to"}>>> = displacement
vector_coefficient<<<{"description": "Name of body force density f. A functor is any of the following: a variable, an MFEM material property, a function, a postprocessor or a numeric vector value (enclosed in curly braces)."}>>> = gravitational_force_density
[]
[]Input Parameters
- allow_duplicate_execution_on_initialFalseIn the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).
Default:False
C++ Type:bool
Controllable:No
Description:In the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).
- execute_onTIMESTEP_ENDThe list of flag(s) indicating when this object should be executed. For a description of each flag, see https://mooseframework.inl.gov/source/interfaces/SetupInterface.html.
Default:TIMESTEP_END
C++ Type:ExecFlagEnum
Controllable:No
Description:The list of flag(s) indicating when this object should be executed. For a description of each flag, see https://mooseframework.inl.gov/source/interfaces/SetupInterface.html.
- execution_order_group0Execution order groups are executed in increasing order (e.g., the lowest number is executed first). Note that negative group numbers may be used to execute groups before the default (0) group. Please refer to the user object documentation for ordering of user object execution within a group.
Default:0
C++ Type:int
Controllable:No
Description:Execution order groups are executed in increasing order (e.g., the lowest number is executed first). Note that negative group numbers may be used to execute groups before the default (0) group. Please refer to the user object documentation for ordering of user object execution within a group.
- force_postauxFalseForces the UserObject to be executed in POSTAUX
Default:False
C++ Type:bool
Controllable:No
Description:Forces the UserObject to be executed in POSTAUX
- force_preauxFalseForces the UserObject to be executed in PREAUX
Default:False
C++ Type:bool
Controllable:No
Description:Forces the UserObject to be executed in PREAUX
- force_preicFalseForces the UserObject to be executed in PREIC during initial setup
Default:False
C++ Type:bool
Controllable:No
Description:Forces the UserObject to be executed in PREIC during initial setup
Execution Scheduling 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.
- use_displaced_meshFalseWhether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.
Default:False
C++ Type:bool
Controllable:No
Description:Whether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.
Advanced Parameters
- prop_getter_suffixAn optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.
C++ Type:MaterialPropertyName
Unit:(no unit assumed)
Controllable:No
Description:An optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.
- use_interpolated_stateFalseFor the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.
Default:False
C++ Type:bool
Controllable:No
Description:For the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.