DerivativeSumMaterial

Meta-material to sum up multiple derivative materials

Description

This material generates new material properties that sum up the values and derivatives of a specified set of function materials. Using args argument the union of all sets of dependent variables has to be specified so that the DerivativeSumMaterial can gather the necessary derivatives to sum up.

Example usage

[./free_energy]
  type = DerivativeSumMaterial
  property_name = F_sum
  sum_materials = 'Fa Fb Fb'
  coupled_variables = 'c'
  outputs = all
[../]

Input Parameters

coupled_variablesVector of names of variables being summed
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:Vector of names of variables being summed

Required Parameters

blockThe list of blocks (ids or names) that this object will be applied
C++ Type:std::vector<SubdomainName>
Unit:(no unit assumed)
Controllable:No
Description:The list of blocks (ids or names) that this object will be applied
boundaryThe list of boundaries (ids or names) from the mesh where this object applies
C++ Type:std::vector<BoundaryName>
Unit:(no unit assumed)
Controllable:No
Description:The list of boundaries (ids or names) from the mesh where this object applies
computeTrueWhen false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the MaterialBase via MaterialBasePropertyInterface::getMaterialBase(). Non-computed MaterialBases are not sorted for dependencies.
Default:True
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:When false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the MaterialBase via MaterialBasePropertyInterface::getMaterialBase(). Non-computed MaterialBases are not sorted for dependencies.
constant_onNONEWhen ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped
Default:NONE
C++ Type:MooseEnum
Unit:(no unit assumed)
Options:NONE, ELEMENT, SUBDOMAIN
Controllable:No
Description:When ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped
declare_suffixAn optional suffix parameter that can be appended to any declared 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 declared properties. The suffix will be prepended with a '_' character.
derivative_order3Maximum order of derivatives taken (2 or 3)
Default:3
C++ Type:unsigned int
Unit:(no unit assumed)
Controllable:No
Description:Maximum order of derivatives taken (2 or 3)
displacement_gradientsVector of displacement gradient variables (see Modules/PhaseField/DisplacementGradients action)
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:Vector of displacement gradient variables (see Modules/PhaseField/DisplacementGradients action)
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.
property_nameFName of the parsed material property
Default:F
C++ Type:std::string
Unit:(no unit assumed)
Controllable:No
Description:Name of the parsed material property
sum_materialsBase name of the parsed sum material property
C++ Type:std::vector<std::string>
Unit:(no unit assumed)
Controllable:No
Description:Base name of the parsed sum material property
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
Unit:(no unit assumed)
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.
validate_couplingTrueCheck if all variables the specified materials depend on are listed in the `coupled_variables` parameter.
Default:True
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Check if all variables the specified materials depend on are listed in the `coupled_variables` parameter.

Optional Parameters

constant0Constant to be added to the prefactor multiplied sum.
Default:0
C++ Type:double
Unit:(no unit assumed)
Controllable:No
Description:Constant to be added to the prefactor multiplied sum.
control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
Unit:(no unit assumed)
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
Unit:(no unit assumed)
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
Unit:(no unit assumed)
Controllable:No
Description:Determines whether this object is calculated using an implicit or explicit form
prefactorPrefactor to multiply the sum term with.
C++ Type:std::vector<double>
Unit:(no unit assumed)
Controllable:No
Description:Prefactor to multiply the sum term with.
seed0The seed for the master random number generator
Default:0
C++ Type:unsigned int
Unit:(no unit assumed)
Controllable:No
Description:The seed for the master random number generator
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
Unit:(no unit assumed)
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

output_propertiesList of material properties, from this material, to output (outputs must also be defined to an output type)
C++ Type:std::vector<std::string>
Unit:(no unit assumed)
Controllable:No
Description:List of material properties, from this material, to output (outputs must also be defined to an output type)
outputsnone Vector of output names where you would like to restrict the output of variables(s) associated with this object
Default:none
C++ Type:std::vector<OutputName>
Unit:(no unit assumed)
Controllable:No
Description:Vector of output names where you would like to restrict the output of variables(s) associated with this object

Outputs Parameters

(moose/test/tests/materials/derivative_sum_material/random_ic.i)

[Mesh]
  type = GeneratedMesh
  dim = 2
  nx = 10
  ny = 10
  xmax = 250
  ymax = 250
  elem_type = QUAD4
[]

[Variables]
  [./c]
    [./InitialCondition]
      type = RandomIC
    [../]
  [../]
[]

[Kernels]
  [./w_res]
    type = Diffusion
    variable = c
  [../]
  [./time]
    type = TimeDerivative
    variable = c
  [../]
[]

[Materials]
  [./free_energy1]
    type = DerivativeParsedMaterial
    property_name = Fa
    coupled_variables = 'c'
    expression = (c-0.1)^4*(1-0.1-c)^4
  [../]
  [./free_energy2]
    type = DerivativeParsedMaterial
    property_name = Fb
    coupled_variables = 'c'
    expression = -0.25*(c-0.1)^4*(1-0.1-c)^4
  [../]

  # Fa+Fb+Fb == Fc
  [./free_energy3]
    type = DerivativeParsedMaterial
    property_name = Fc
    coupled_variables = 'c'
    expression = 0.5*(c-0.1)^4*(1-0.1-c)^4
    outputs = all
  [../]
  [./dfree_energy3]
    type = DerivativeParsedMaterial
    property_name = dFc
    coupled_variables = 'c'
    material_property_names = 'F:=D[Fc,c]'
    expression = F
    outputs = all
  [../]
  [./d2free_energy3]
    type = DerivativeParsedMaterial
    property_name = d2Fc
    coupled_variables = 'c'
    material_property_names = 'F:=D[Fc,c,c]'
    expression = F
    outputs = all
  [../]

  [./free_energy]
    type = DerivativeSumMaterial
    property_name = F_sum
    sum_materials = 'Fa Fb Fb'
    coupled_variables = 'c'
    outputs = all
  [../]
  [./dfree_energy]
    type = DerivativeParsedMaterial
    property_name = dF_sum
    material_property_names = 'F:=D[F_sum,c]'
    expression = F
    coupled_variables = 'c'
    outputs = all
  [../]
  [./d2free_energy]
    type = DerivativeParsedMaterial
    property_name = d2F_sum
    material_property_names = 'F:=D[F_sum,c,c]'
    expression = F
    coupled_variables = 'c'
    outputs = all
  [../]
[]

[Executioner]
  type = Transient
  num_steps = 1
[]

[Postprocessors]
  [./F_sum]
    type = ElementAverageValue
    variable = F_sum
  [../]
  [./F_check]
    type = ElementAverageValue
    variable = Fc
  [../]
  [./dF_sum]
    type = ElementAverageValue
    variable = dF_sum
  [../]
  [./dF_check]
    type = ElementAverageValue
    variable = dFc
  [../]
  [./d2F_sum]
    type = ElementAverageValue
    variable = d2F_sum
  [../]
  [./d2F_check]
    type = ElementAverageValue
    variable = d2Fc
  [../]
[]

[Outputs]
  exodus = true
[]

Description
Example usage
Input Parameters