VectorConstantIC

The VectorConstantIC class is used to set initial values of components of a vector variable. The x component can be set through the x_value parameter, the y component through y_value, and the z component through z_value. Note that x_value is required. If y_value or z_value are not supplied, they are defaulted to zero.

Sets constant component values for a vector field variable.

Input Parameters

variableThe variable this initial condition is supposed to provide values for.
C++ Type:VariableName
Options:
Description:The variable this initial condition is supposed to provide values for.
x_valueThe x value to be set in IC
C++ Type:double
Options:
Description:The x value to be set in IC

Required Parameters

blockThe list of block ids (SubdomainID) that this object will be applied
C++ Type:std::vector
Options:
Description:The list of block ids (SubdomainID) that this object will be applied
boundaryThe list of boundary IDs from the mesh where this boundary condition applies
C++ Type:std::vector
Options:
Description:The list of boundary IDs from the mesh where this boundary condition applies
y_value0The y value to be set in IC
Default:0
C++ Type:double
Options:
Description:The y value to be set in IC
z_value0The z value to be set in IC
Default:0
C++ Type:double
Options:
Description:The z value to be set in IC

Optional Parameters

control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector
Options:
Description:Adds user-defined labels for accessing object parameters via control logic.
enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Options:
Description:Set the enabled status of the MooseObject.
ignore_uo_dependencyFalseWhen set to true, a UserObject retrieved by this IC will not be executed before the this IC
Default:False
C++ Type:bool
Options:
Description:When set to true, a UserObject retrieved by this IC will not be executed before the this IC

Advanced Parameters

Input Files

test/tests/kernels/transient_vector_diffusion/transient_vector_diffusion.i
modules/navier_stokes/test/tests/ins/lid_driven/ad_lid_driven_stabilized.i
test/tests/kernels/ad_transient_diffusion/ad_transient_vector_diffusion.i
test/tests/ics/vector_constant_ic/vector_constant_ic.i

test/tests/kernels/transient_vector_diffusion/transient_vector_diffusion.i

[Mesh]
  [./generator]
    type = GeneratedMeshGenerator
    dim = 2
    nx = 10
    ny = 10
  [../]
  [./block1]
    type = SubdomainBoundingBoxGenerator
    input = generator
    bottom_left = '0 0 -1'
    top_right = '1 1 1'
    block_id = 1
  [../]
  [./block2]
    type = SubdomainBoundingBoxGenerator
    input = block1
    bottom_left = '0.33 0.33 -1'
    top_right = '0.67 0.67 1'
    block_id = 2
  [../]
[]

[Variables]
  [./u]
    family = LAGRANGE_VEC
  [../]
[]

[ICs]
  [./u]
    type = VectorConstantIC
    variable = u
    x_value = 1
    y_value = 2
    z_value = 3
    block = 2
  [../]
[]

[Kernels]
  [./diff]
    type = VectorDiffusion
    variable = u
  [../]
  [./time]
    type = VectorTimeDerivative
    variable = u
  [../]
[]

[Executioner]
  type = Transient
  num_steps = 20
  dt = 0.01
  solve_type = NEWTON
  petsc_options_iname = '-pc_type -pc_hypre_type'
  petsc_options_value = 'hypre boomeramg'
[]

[Outputs]
  exodus = true
[]

modules/navier_stokes/test/tests/ins/lid_driven/ad_lid_driven_stabilized.i

[Mesh]
  [gen]
    type = GeneratedMeshGenerator
    dim = 2
    xmin = 0
    xmax = 1.0
    ymin = 0
    ymax = 1.0
    nx = 64
    ny = 64
  []
  [./corner_node]
    type = ExtraNodesetGenerator
    new_boundary = 'pinned_node'
    nodes = '0'
    input = gen
  [../]
[]

[AuxVariables]
  [vel_x]
  []
  [vel_y]
  []
[]

[AuxKernels]
  [vel_x]
    type = VectorVariableComponentAux
    variable = vel_x
    vector_variable = velocity
    component = 'x'
  []
  [vel_y]
    type = VectorVariableComponentAux
    variable = vel_y
    vector_variable = velocity
    component = 'y'
  []
[]

[Variables]
  [./velocity]
    family = LAGRANGE_VEC
  [../]
  [./p]
  [../]
[]

[ICs]
  [velocity]
    type = VectorConstantIC
    x_value = 1e-15
    y_value = 1e-15
    variable = velocity
  []
[]

[Kernels]
  [./mass]
    type = INSADMass
    variable = p
  [../]
  [./mass_pspg]
    type = INSADMassPSPG
    variable = p
  [../]

  [./momentum_convection]
    type = INSADMomentumAdvection
    variable = velocity
  [../]

  [./momentum_viscous]
    type = INSADMomentumViscous
    variable = velocity
  [../]

  [./momentum_pressure]
    type = INSADMomentumPressure
    variable = velocity
    p = p
    integrate_p_by_parts = true
  [../]

  [./momentum_supg]
    type = INSADMomentumSUPG
    variable = velocity
    velocity = velocity
  [../]
[]

[BCs]
  [./no_slip]
    type = VectorFunctionDirichletBC
    variable = velocity
    boundary = 'bottom right left'
  [../]

  [./lid]
    type = VectorFunctionDirichletBC
    variable = velocity
    boundary = 'top'
    function_x = 'lid_function'
  [../]

  [./pressure_pin]
    type = DirichletBC
    variable = p
    boundary = 'pinned_node'
    value = 0
  [../]
[]

[Materials]
  [./const]
    type = GenericConstantMaterial
    prop_names = 'rho mu'
    prop_values = '1  1'
  [../]
  [ins_mat]
    type = INSADTauMaterial
    velocity = velocity
    pressure = p
    transient_term = false
    integrate_p_by_parts = true
    alpha = .1
  []
[]

[Functions]
  [./lid_function]
    # We pick a function that is exactly represented in the velocity
    # space so that the Dirichlet conditions are the same regardless
    # of the mesh spacing.
    type = ParsedFunction
    value = '4*x*(1-x)'
  [../]
[]

[Preconditioning]
  [./SMP]
    type = SMP
    full = true
    solve_type = 'NEWTON'
  [../]
[]

[Executioner]
  type = Steady
  petsc_options_iname = '-pc_type'
  petsc_options_value = 'lu'
  line_search = 'none'
  nl_rel_tol = 1e-12
  nl_abs_tol = 1e-13
  nl_max_its = 6
  l_tol = 1e-6
  l_max_its = 500
[]

[Outputs]
  exodus = true
  file_base = lid_driven_stabilized_out
  [dofmap]
    type = DOFMap
    execute_on = 'initial'
  []
[]

[Postprocessors]
  [lin]
    type = NumLinearIterations
  []
  [nl]
    type = NumNonlinearIterations
  []
  [lin_tot]
    type = CumulativeValuePostprocessor
    postprocessor = 'lin'
  []
  [nl_tot]
    type = CumulativeValuePostprocessor
    postprocessor = 'nl'
  []
[]

test/tests/kernels/ad_transient_diffusion/ad_transient_vector_diffusion.i

[Mesh]
  [./generator]
    type = GeneratedMeshGenerator
    dim = 2
    nx = 10
    ny = 10
  [../]
  [./block1]
    type = SubdomainBoundingBoxGenerator
    input = generator
    bottom_left = '0 0 -1'
    top_right = '1 1 1'
    block_id = 1
  [../]
  [./block2]
    type = SubdomainBoundingBoxGenerator
    input = block1
    bottom_left = '0.33 0.33 -1'
    top_right = '0.67 0.67 1'
    block_id = 2
  [../]
[]

[Variables]
  [./u]
    family = LAGRANGE_VEC
  [../]
[]

[ICs]
  [./u]
    type = VectorConstantIC
    variable = u
    x_value = 1
    y_value = 2
    z_value = 3
    block = 2
  [../]
[]

[Kernels]
  [./diff]
    type = ADVectorDiffusion
    variable = u
  [../]
  [./time]
    type = ADVectorTimeDerivative
    variable = u
  [../]
[]

[Executioner]
  type = Transient
  num_steps = 20
  dt = 0.01
  solve_type = NEWTON
  petsc_options_iname = '-pc_type -pc_hypre_type'
  petsc_options_value = 'hypre boomeramg'
[]

[Outputs]
  exodus = true
[]

test/tests/ics/vector_constant_ic/vector_constant_ic.i

[Mesh]
  type = GeneratedMesh
  dim = 3
  nx = 2
  ny = 2
  nz = 2
[]

[Problem]
  solve = false
  kernel_coverage_check = false
[]

[Variables]
  [./A]
    family = LAGRANGE_VEC
    order = FIRST
  [../]
[]

[ICs]
  [./A]
    type = VectorConstantIC
    variable = A
    x_value = 2
    y_value = 3
    z_value = 4
  [../]
[]

[Executioner]
  type = Steady
  solve_type = 'NEWTON'
[]

[Outputs]
  exodus = true
[]

References

Input Parameters
Input Files
References

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