CopyNodalVarsAction

Copies variable information from a file.

This action handles the initial_from_file_var Variables parameter as used below,

[Variables]
  [v]
    family = MONOMIAL
    order = CONSTANT
    fv = true
    initial_from_file_var = v
  []
  [lambda]
    family = SCALAR
    order = FIRST
    initial_from_file_var = lambda
  []
[]

This syntax is restricted to restarting from Exodus files. More information about alternative options to restart simulations may be found in the Restart/Recover system.

Input Parameters

active__all__ If specified only the blocks named will be visited and made active
Default:__all__
C++ Type:std::vector<std::string>
Controllable:No
Description:If specified only the blocks named will be visited and made active
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.
inactiveIf specified blocks matching these identifiers will be skipped.
C++ Type:std::vector<std::string>
Controllable:No
Description:If specified blocks matching these identifiers will be skipped.

Optional Parameters

initial_from_file_timestepLATESTGives the timestep (or "LATEST") for which to read a solution from a file for a given variable. (Default: LATEST)
Default:LATEST
C++ Type:std::string
Controllable:No
Description:Gives the timestep (or "LATEST") for which to read a solution from a file for a given variable. (Default: LATEST)
initial_from_file_varGives the name of a variable for which to read an initial condition from a mesh file
C++ Type:std::string
Controllable:No
Description:Gives the name of a variable for which to read an initial condition from a mesh file

Initial From File Parameters

(../moose/test/tests/restart/scalar-var/part2.i)

[Mesh]
  [fmg]
    type = FileMeshGenerator
    file = part1_out.e
    use_for_exodus_restart = true
  []
[]

[Variables]
  [v]
    family = MONOMIAL
    order = CONSTANT
    fv = true
    initial_from_file_var = v
  []
  [lambda]
    family = SCALAR
    order = FIRST
    initial_from_file_var = lambda
  []
[]

[FVKernels]
  [advection]
    type = FVElementalAdvection
    variable = v
    velocity = '1 0 0'
  []
  [lambda]
    type = FVScalarLagrangeMultiplier
    variable = v
    lambda = lambda
    phi0 = 1
  []
[]

[Executioner]
  type = Steady
  petsc_options_iname = '-snes_max_it'
  petsc_options_value = '0'
  nl_abs_tol = 1e-10
[]

[Outputs]
  [out]
    type = Exodus
    execute_on = 'final'
  []
[]