TwoPhaseFluidPropertiesIndependent

2-phase fluid properties for 2 independent single-phase fluid properties

This 2-phase fluid properties class takes as its parameters the names of its two 1-phase fluid properties objects, thus allowing an arbitrary combination of 1-phase fluid properties objects to be used. This class disallows calling any of the 2-phase fluid properties interfaces (for example, saturation temperature), since this class assumes that the 2 phases are independent and thus should not have any 2-phase properties. This class is useful for using in test problems that ideally should reduce to two 1-phase test problems acting independently.

Input Parameters

fp_liquidLiquid single-phase fluid properties user object name
C++ Type:UserObjectName
Options:
Description:Liquid single-phase fluid properties user object name
fp_vaporVapor single-phase fluid properties user object name
C++ Type:UserObjectName
Options:
Description:Vapor single-phase fluid properties user object name

Required Parameters

allow_imperfect_jacobiansFalsetrue to allow unimplemented property derivative terms to be set to zero for the AD API
Default:False
C++ Type:bool
Options:
Description:true to allow unimplemented property derivative terms to be set to zero for the AD API
execute_onTIMESTEP_ENDThe list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, FINAL, CUSTOM.
Default:TIMESTEP_END
C++ Type:ExecFlagEnum
Options:NONE INITIAL LINEAR NONLINEAR TIMESTEP_END TIMESTEP_BEGIN FINAL CUSTOM
Description:The list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, FINAL, CUSTOM.
fp_typetwo-phase-fpType of the fluid property object
Default:two-phase-fp
C++ Type:FPType
Options:
Description:Type of the fluid property object

Optional 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
Options:
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).
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.
force_preauxFalseForces the GeneralUserObject to be executed in PREAUX
Default:False
C++ Type:bool
Options:
Description:Forces the GeneralUserObject to be executed in PREAUX
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

Input Files

modules/fluid_properties/test/tests/two_phase_fluid_properties_independent/test.i

modules/fluid_properties/test/tests/two_phase_fluid_properties_independent/test.i

# Tests the TwoPhaseFluidPropertiesIndependent class, which takes the names
# of 2 single-phase fluid properties independently. This test uses a dummy
# aux to make sure that the single-phase fluid properties can be recovered
# from the 2-phase fluid properties. A modification to this test checks that
# an error results if one tries to call a 2-phase fluid properties interface
# using this class, which is designed to ensure that the 2 phases are independent.

[Mesh]
  type = GeneratedMesh
  dim = 1
  nx = 1
[]

[Problem]
  solve = false
[]

[AuxVariables]
  [./p]
    initial_condition = 1e5
  [../]
  [./T]
    initial_condition = 300
  [../]
  [./rho_avg]
  [../]
[]

[Modules]
  [./FluidProperties]
    # rho1 = 1.149425287 kg/m^3
    [./fp1]
      type = IdealGasFluidProperties
      gamma = 1.4
      molar_mass = 0.02867055103448276
    [../]
    # rho2 = 0.6666666667 kg/m^3
    [./fp2]
      type = IdealGasFluidProperties
      gamma = 1.2
      molar_mass = 0.0166289196
    [../]
    [./fp_2phase]
      type = TwoPhaseFluidPropertiesIndependent
      fp_liquid = fp1
      fp_vapor = fp2
    [../]
  []
[]

[AuxKernels]
  # correct value (0.5*(rho1 + rho2)) should be: 0.90804597685 kg/m^3
  [./rho_avg_aux]
    type = TwoPhaseAverageDensityAux
    variable = rho_avg
    p = p
    T = T
    fp_2phase = fp_2phase
    execute_on = 'initial'
  [../]
[]

[Postprocessors]
  [./rho_avg_value]
    type = NodalVariableValue
    variable = rho_avg
    nodeid = 0
  [../]
[]

[Executioner]
  type = Steady
[]

[Outputs]
  execute_on = 'timestep_end'
  csv = true
[]

References

Input Parameters
Input Files
References

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