FVPorosityTimeDerivative

A time derivative multiplied by a porosity material property

Overview

This object simply multiplies the residual of FVTimeKernel by the porosity. In other words this object computes:

$var element = document.getElementById("moose-equation-71b811cf-9751-41b2-8379-ede5dd529d38");katex.render("\\int_{\\Omega_C} \\epsilon\\frac{\\partial u}{\\partial t} dV", element, {displayMode:true,throwOnError:false,macros:{"\\pf":"\\frac{\\partial #1}{\\partial #2}"}});$

where $var element = document.getElementById("moose-equation-289a70f8-a4b1-4886-b378-19837be7c462");katex.render("u", element, {displayMode:false,throwOnError:false,macros:{"\\pf":"\\frac{\\partial #1}{\\partial #2}"}});$ corresponds to the variable parameter.

Input Parameters

variableThe name of the finite volume variable this kernel applies to
C++ Type:NonlinearVariableName
Options:
Description:The name of the finite volume variable this kernel applies to

Required Parameters

blockThe list of blocks (ids or names) that this object will be applied
C++ Type:std::vector<SubdomainName>
Options:
Description:The list of blocks (ids or names) that this object will be applied
ghost_layers1The number of layers of elements to ghost.
Default:1
C++ Type:unsigned short
Options:
Description:The number of layers of elements to ghost.
porosityporosityThe porosity
Default:porosity
C++ Type:MaterialPropertyName
Options:
Description:The porosity
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
Options:
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_point_neighborsFalseWhether to use point neighbors, which introduces additional ghosting to that used for simple face neighbors.
Default:False
C++ Type:bool
Options:
Description:Whether to use point neighbors, which introduces additional ghosting to that used for simple face neighbors.

Optional Parameters

control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
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.
implicitTrueDetermines whether this object is calculated using an implicit or explicit form
Default:True
C++ Type:bool
Options:
Description:Determines whether this object is calculated using an implicit or explicit form
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
Options:
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

extra_matrix_tagsThe extra tags for the matrices this Kernel should fill
C++ Type:std::vector<TagName>
Options:
Description:The extra tags for the matrices this Kernel should fill
extra_vector_tagsThe extra tags for the vectors this Kernel should fill
C++ Type:std::vector<TagName>
Options:
Description:The extra tags for the vectors this Kernel should fill
matrix_tagssystem timeThe tag for the matrices this Kernel should fill
Default:system time
C++ Type:MultiMooseEnum
Options:nontime, system, time
Description:The tag for the matrices this Kernel should fill
vector_tagstimeThe tag for the vectors this Kernel should fill
Default:time
C++ Type:MultiMooseEnum
Options:nontime, time
Description:The tag for the vectors this Kernel should fill

Tagging Parameters

Input Files

(modules/navier_stokes/test/tests/finite_volume/cns/scalar_advection/mass-frac-advection.i)

(modules/navier_stokes/test/tests/finite_volume/cns/scalar_advection/mass-frac-advection.i)

rho_initial=1.29
p_initial=1.01e5
T=273.15
gamma=1.4
e_initial=${fparse p_initial / (gamma - 1) / rho_initial}
et_initial=${e_initial}
rho_et_initial=${fparse rho_initial * et_initial}
v_in=1

[GlobalParams]
  fp = fp
[]

[Mesh]
  [cartesian]
    type = GeneratedMeshGenerator
    dim = 2
    xmin = 0
    xmax = 1
    nx = 2
    ymin = 0
    ymax = 10
    ny = 20
  []
[]

[Modules]
  [FluidProperties]
    [fp]
      type = IdealGasFluidProperties
    []
  []
[]

[Variables]
  [rho]
    type = MooseVariableFVReal
    initial_condition = ${rho_initial}
  []
  [rho_u]
    type = MooseVariableFVReal
    initial_condition = 1e-15
  []
  [rho_v]
    type = MooseVariableFVReal
    initial_condition = 1e-15
  []
  [rho_et]
    type = MooseVariableFVReal
    initial_condition = ${rho_et_initial}
    scaling = 1e-5
  []
  [mass_frac]
    type = MooseVariableFVReal
    initial_condition = 1e-15
  []
[]

[AuxVariables]
  [U_x]
    type = MooseVariableFVReal
  []
  [U_y]
    type = MooseVariableFVReal
  []
  [pressure]
    type = MooseVariableFVReal
  []
  [temperature]
    type = MooseVariableFVReal
  []
  [courant]
    type = MooseVariableFVReal
  []
[]

[AuxKernels]
  [U_x]
    type = ADMaterialRealAux
    variable = U_x
    property = vel_x
    execute_on = 'timestep_end'
  []
  [U_y]
    type = ADMaterialRealAux
    variable = U_y
    property = vel_y
    execute_on = 'timestep_end'
  []
  [pressure]
    type = ADMaterialRealAux
    variable = pressure
    property = pressure
    execute_on = 'timestep_end'
  []
  [temperature]
    type = ADMaterialRealAux
    variable = temperature
    property = T_fluid
    execute_on = 'timestep_end'
  []
  [courant]
    type = Courant
    variable = courant
    u = U_x
    v = U_y
  []
[]

[FVKernels]
  [mass_time]
    type = FVPorosityTimeDerivative
    variable = rho
  []
  [mass_advection]
    type = PCNSFVKT
    variable = rho
    eqn = "mass"
  []

  [momentum_time_x]
    type = FVTimeKernel
    variable = rho_u
  []
  [momentum_advection_and_pressure_x]
    type = PCNSFVKT
    variable = rho_u
    eqn = "momentum"
    momentum_component = 'x'
  []

  [momentum_time_y]
    type = FVTimeKernel
    variable = rho_v
  []
  [momentum_advection_and_pressure_y]
    type = PCNSFVKT
    variable = rho_v
    eqn = "momentum"
    momentum_component = 'y'
  []

  [energy_time]
    type = FVPorosityTimeDerivative
    variable = rho_et
  []
  [energy_advection]
    type = PCNSFVKT
    variable = rho_et
    eqn = "energy"
  []

  [mass_frac_time]
    type = PCNSFVDensityTimeDerivative
    variable = mass_frac
    rho = rho
  []
  [mass_frac_advection]
    type = PCNSFVKT
    variable = mass_frac
    eqn = "scalar"
  []
[]

[Functions]
  [ud_in]
    type = ParsedVectorFunction
    value_x = '0'
    value_y = '${v_in}'
  []
[]


[FVBCs]
  [rho_bottom]
    type = PCNSFVStrongBC
    boundary = 'bottom'
    variable = rho
    superficial_velocity = 'ud_in'
    T_fluid = ${T}
    eqn = 'mass'
  []
  [rho_u_bottom]
    type = PCNSFVStrongBC
    boundary = 'bottom'
    variable = rho_u
    superficial_velocity = 'ud_in'
    T_fluid = ${T}
    eqn = 'momentum'
    momentum_component = 'x'
  []
  [rho_v_bottom]
    type = PCNSFVStrongBC
    boundary = 'bottom'
    variable = rho_v
    superficial_velocity = 'ud_in'
    T_fluid = ${T}
    eqn = 'momentum'
    momentum_component = 'y'
  []
  [rho_et_bottom]
    type = PCNSFVStrongBC
    boundary = 'bottom'
    variable = rho_et
    superficial_velocity = 'ud_in'
    T_fluid = ${T}
    eqn = 'energy'
  []
  [mass_frac_bottom]
    type = PCNSFVStrongBC
    boundary = 'bottom'
    variable = mass_frac
    superficial_velocity = 'ud_in'
    T_fluid = ${T}
    scalar = 1
    eqn = 'scalar'
  []

  [rho_top]
    type = PCNSFVStrongBC
    boundary = 'top'
    variable = rho
    pressure = ${p_initial}
    eqn = 'mass'
  []
  [rho_u_top]
    type = PCNSFVStrongBC
    boundary = 'top'
    variable = rho_u
    pressure = ${p_initial}
    eqn = 'momentum'
    momentum_component = 'x'
  []
  [rho_v_top]
    type = PCNSFVStrongBC
    boundary = 'top'
    variable = rho_v
    pressure = ${p_initial}
    eqn = 'momentum'
    momentum_component = 'y'
  []
  [rho_et_top]
    type = PCNSFVStrongBC
    boundary = 'top'
    variable = rho_et
    pressure = ${p_initial}
    eqn = 'energy'
  []
  [mass_frac_top]
    type = PCNSFVStrongBC
    boundary = 'top'
    variable = mass_frac
    pressure = ${p_initial}
    eqn = 'scalar'
  []

  [momentum_x_walls]
    type = PCNSFVImplicitMomentumPressureBC
    variable = rho_u
    boundary = 'left right'
    momentum_component = 'x'
  []
  [momentum_y_walls]
    type = PCNSFVImplicitMomentumPressureBC
    variable = rho_v
    boundary = 'left right'
    momentum_component = 'y'
  []
[]

[Materials]
  [var_mat]
    type = PorousConservedVarMaterial
    rho = rho
    rho_et = rho_et
    superficial_rhou = rho_u
    superficial_rhov = rho_v
    fp = fp
    porosity = porosity
  []
  [porosity]
    type = GenericConstantMaterial
    prop_names = 'porosity'
    prop_values = '1'
  []
[]

[Executioner]
  type = Transient
  [TimeIntegrator]
    type = ActuallyExplicitEuler
  []
  steady_state_detection = true
  steady_state_tolerance = 1e-12
  abort_on_solve_fail = true
  dt = 5e-4
  num_steps = 25
[]

[Outputs]
  [out]
    type = Exodus
    execute_on = 'initial timestep_end'
  []
  [dof]
    type = DOFMap
    execute_on = 'initial'
  []
[]

[Debug]
  show_var_residual_norms = true
[]

Overview
Input Parameters
Input Files

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