WCNSFV2PSlipVelocityFunctorMaterial

This material computes the slip velocity between a dispersed phase and a mixture phase. The slip velocity is modeled as follows:

vslip,d=τdfdragρdρmρda, \bm{v}_{slip,d} = \frac{\tau_d}{f_{drag}} \frac{\rho_d - \rho_m}{\rho_d} \bm{a} \,,

where:

  • τd\tau_d is the particle relaxation time,

  • fdragf_{drag} is the linear drag coefficient function,

  • ρd\rho_d is the density of the dispersed phase,

  • ρm\rho_m is the density of the mixture,

  • a\bm{a} is the acceleration vector.

The particle relaxation time is modeled as follows Bilicki and Kestin (1990):

τd=ρddd218μm, \tau_d = \frac{\rho_d d_d^2}{18 \mu_m} \,,

where:

  • ddd_d is the particle diameter,

  • μm\mu_m is the mixture dynamic viscosity.

The acceleration vector is the particle acceleration vector:

a=g+fρmumumumdt, \bm{a} = \bm{g} + \frac{\bm{f}}{\rho_m} - \bm{u}_m \cdot \nabla \bm{u}_m - \frac{\partial \bm{u}_m}{dt} \,,

where:

  • g\bm{g} is the acceleration of gravity,

  • f\bm{f} is the volumetric force,

  • um\bm{u}_m is the mixture velocity.

Input Parameters

  • momentum_componentThe component of the momentum equation that this kernel applies to.

    C++ Type:MooseEnum

    Unit:(no unit assumed)

    Options:x, y, z

    Controllable:No

    Description:The component of the momentum equation that this kernel applies to.

  • muMixture Density. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

    C++ Type:MooseFunctorName

    Unit:(no unit assumed)

    Controllable:No

    Description:Mixture Density. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

  • rhoContinuous phase density. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

    C++ Type:MooseFunctorName

    Unit:(no unit assumed)

    Controllable:No

    Description:Continuous phase density. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

  • rho_dDispersed phase density. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

    C++ Type:MooseFunctorName

    Unit:(no unit assumed)

    Controllable:No

    Description:Dispersed phase density. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

  • slip_velocity_namethe name of the slip velocity. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

    C++ Type:MooseFunctorName

    Unit:(no unit assumed)

    Controllable:No

    Description:the name of the slip velocity. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

  • uThe velocity in the x direction.

    C++ Type:std::vector<VariableName>

    Unit:(no unit assumed)

    Controllable:No

    Description:The velocity in the x direction.

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

  • 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.

  • execute_onALWAYSThe list of flag(s) indicating when this object should be executed. For a description of each flag, see https://mooseframework.inl.gov/source/interfaces/SetupInterface.html.

    Default:ALWAYS

    C++ Type:ExecFlagEnum

    Unit:(no unit assumed)

    Options:NONE, INITIAL, LINEAR, NONLINEAR_CONVERGENCE, NONLINEAR, POSTCHECK, TIMESTEP_END, TIMESTEP_BEGIN, MULTIAPP_FIXED_POINT_END, MULTIAPP_FIXED_POINT_BEGIN, FINAL, CUSTOM, ALWAYS

    Controllable:No

    Description:The list of flag(s) indicating when this object should be executed. For a description of each flag, see https://mooseframework.inl.gov/source/interfaces/SetupInterface.html.

  • fd0Fraction dispersed phase. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

    Default:0

    C++ Type:MooseFunctorName

    Unit:(no unit assumed)

    Controllable:No

    Description:Fraction dispersed phase. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

  • force_direction1 0 0Gravitational acceleration vector

    Default:1 0 0

    C++ Type:libMesh::VectorValue<double>

    Unit:(no unit assumed)

    Controllable:No

    Description:Gravitational acceleration vector

  • force_function0A function that describes the body force

    Default:0

    C++ Type:FunctionName

    Unit:(no unit assumed)

    Controllable:No

    Description:A function that describes the body force

  • force_postprocessor0A postprocessor whose value is multiplied by the body force

    Default:0

    C++ Type:PostprocessorName

    Unit:(no unit assumed)

    Controllable:No

    Description:A postprocessor whose value is multiplied by the body force

  • force_value0Coefficient to multiply by the body force term

    Default:0

    C++ Type:double

    Unit:(no unit assumed)

    Controllable:No

    Description:Coefficient to multiply by the body force term

  • ghost_layers3The number of layers of elements to ghost. With Rhie-Chow and the velocity gradient calculation below, we need 3

    Default:3

    C++ Type:unsigned short

    Unit:(no unit assumed)

    Controllable:No

    Description:The number of layers of elements to ghost. With Rhie-Chow and the velocity gradient calculation below, we need 3

  • gravity0 0 0Gravity acceleration vector

    Default:0 0 0

    C++ Type:libMesh::VectorValue<double>

    Unit:(no unit assumed)

    Controllable:No

    Description:Gravity acceleration vector

  • linear_coef_name0.44Linear friction coefficient name as a material property. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

    Default:0.44

    C++ Type:MooseFunctorName

    Unit:(no unit assumed)

    Controllable:No

    Description:Linear friction coefficient name as a material property. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

  • particle_diameter1Diameter of particles in the dispersed phase. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

    Default:1

    C++ Type:MooseFunctorName

    Unit:(no unit assumed)

    Controllable:No

    Description:Diameter of particles in the dispersed phase. A functor is any of the following: a variable, a functor material property, a function, a post-processor, or a number.

  • 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.

  • 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.

  • vThe velocity in the y direction.

    C++ Type:std::vector<VariableName>

    Unit:(no unit assumed)

    Controllable:No

    Description:The velocity in the y direction.

  • wThe velocity in the z direction.

    C++ Type:std::vector<VariableName>

    Unit:(no unit assumed)

    Controllable:No

    Description:The velocity in the z direction.

Optional Parameters

  • 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

  • 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

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

References

  1. Zbigniew Bilicki and Joseph Kestin. Physical aspects of the relaxation model in two-phase flow. Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 428(1875):379–397, 1990.[BibTeX]