This section is referenced in the following other sections

6.12.5. Open Boundary Condition On Surface

Scope

Fuego Region

Summary

Defines an open (specified pressure) boundary condition on a named surface of the mesh. Optionally, specify far-field entrainment values for scalars. Any primitive variable line command below is used to specify these far-field entrainment values. One may also specify a total pressure in which case, the dynamic component will be removed for use in the pressure gradient and mass flux routine. Lastly, for turbulent flows, if the turbulence quantities are not set, then one must specify at least a characteristic length or also specify a turbulence intensity (10% assumed). These values are used to determine an entrainment value for turbulence quantities.

begin Open Boundary Condition On Surface Surfacename

    {contact_angle | edc_product | gas_volume_fraction | mixture_fraction | pressure | progress_variable | scalar_variance | second_mixture_fraction | solid_volume_fraction | soot_mass_fraction | soot_nuclei_mass_fraction | temperature | turbulent_dissipation | turbulent_frequency | turbulent_helmholtz_function | turbulent_kinetic_energy | turbulent_v2 | volume_of_fluid | x_solid_velocity | x_velocity | y_solid_velocity | y_velocity | z_solid_velocity | z_velocity} {=} Value

   Apply Pressure Penalty [ Of PenaltyValue  ]

   Characteristic_Length {=} Characteristic length

   Emissivity Spectral File Name {=} Name

   Entrain Local Values

   External Field For VariableName [{of} Species] {=} ExtFieldName [ Of Size Value With Multiplier {=} Multiplier  ]

   Emissivity {=} value

   Flow Must Exit Domain

   Function For {contact_angle | edc_product | gas_volume_fraction | mixture_fraction | pressure | progress_variable | scalar_variance | second_mixture_fraction | solid_volume_fraction | soot_mass_fraction | soot_nuclei_mass_fraction | temperature | turbulent_dissipation | turbulent_frequency | turbulent_helmholtz_function | turbulent_kinetic_energy | turbulent_v2 | volume_of_fluid | x_solid_velocity | x_velocity | y_solid_velocity | y_velocity | z_solid_velocity | z_velocity} {=} FuncName [ In The {t | x | y | z} Direction  ]

   Function For Emissivity {=} functionName [ In The {t | x | y | z} Direction  ]

   Function For Mass_Fraction {=} FuncName In The {t | x | y | z} Direction

   Function For Mole_Fraction {=} FuncName In The {t | x | y | z} Direction

   Function For Radiation Boundary Temperature {=} functionName

   Function For Radiation Environment Temperature {=} functionName

   Function For Transmissivity {=} functionName [ In The {t | x | y | z} Direction  ]

   Function For Transparent Band Emissivity {=} functionName [ In The {t | x | y | z} Direction  ]

   Function For Total_Pressure {=} Pressure function In The {t | x | y | z} Direction

   Function For Wall Temperature {=} functionName [ In The {t | x | y | z} Direction  ]

   Inline Function For {contact_angle | edc_product | gas_volume_fraction | mixture_fraction | pressure | progress_variable | scalar_variance | second_mixture_fraction | solid_volume_fraction | soot_mass_fraction | soot_nuclei_mass_fraction | temperature | turbulent_dissipation | turbulent_frequency | turbulent_helmholtz_function | turbulent_kinetic_energy | turbulent_v2 | volume_of_fluid | x_solid_velocity | x_velocity | y_solid_velocity | y_velocity | z_solid_velocity | z_velocity} {=} FuncStr

   Integer Data For Subroutine SubName {=} Values...

   Momentum Entrainment {=} {computed | specified | tangential}

   Mass_Fraction Species {=} Mass fraction

   Mole_Fraction Species {=} Mole fraction

   Omit Diffusion Terms

   Post Process Delta Area

   Post Process Delta Mass Flow Rate

   Post Process Delta Pressure

   Post Process Delta Thrust

   Postprocess FluxType Flux Of {conserved_enthalpy | continuity | edc_product | enthalpy | mixture_fraction | nuclei | progress_variable | scalar_variance | second_mixture_fraction | solid_volume_fraction | soot | species | temperature | turbulent_dissipation | turbulent_frequency | turbulent_helmholtz_function | turbulent_kinetic_energy | turbulent_v2 | volume_of_fluid | x_momentum | x_solid_momentum | y_momentum | y_solid_momentum | z_momentum | z_solid_momentum} [ As aliases...  ]

   Progress_Variable ProgressVariableName {=} Value

   Real Data For Subroutine SubName {=} Values...

   Radiation Boundary Temperature {=} value

   Radiation Boundary Temperature Field {=} FieldName

   Radiation Environment Temperature {=} value

   Radiation Environment Temperature Field {=} FieldName

   Sponge Layer Blending Function {=} {heaviside | linear}

   Sponge Layer Thickness {=} Value

   Sponge Layer Viscosity {=} Value

   Sponge Layer Viscosity Type {=} {absolute | multiple}

   Subroutine For {contact_angle | edc_product | gas_volume_fraction | mixture_fraction | pressure | progress_variable | scalar_variance | second_mixture_fraction | solid_volume_fraction | soot_mass_fraction | soot_nuclei_mass_fraction | temperature | turbulent_dissipation | turbulent_frequency | turbulent_helmholtz_function | turbulent_kinetic_energy | turbulent_v2 | volume_of_fluid | x_solid_velocity | x_velocity | y_solid_velocity | y_velocity | z_solid_velocity | z_velocity} {=} Subroutine

   Subroutine For Emissivity {=} subroutineName

   Subroutine For Mass_Fraction {=} Subroutine

   Subroutine For Mole_Fraction {=} Subroutine

   Subroutine For Radiation Boundary Temperature {=} subroutineName

   Subroutine For Radiation Environment Temperature {=} subroutineName

   Subroutine For Transmissivity {=} subroutineName

   Subroutine For Transparent Band Emissivity {=} subroutineName

   Subroutine For Total_Pressure {=} Subroutine

   Subroutine For Wall Temperature {=} subroutineName

   Transparent Band Emissivity {=} value

   Total_Pressure {=} Pressure

   Transmissivity {=} value

   Turbulence_Intensity {=} Turbulent intensity

   Use Sponge Layer

   Wall Temperature {=} value

end Open Boundary Condition On Surface Surfacename

6.12.5.1. Line Commands

Primitivevariable

Syntax

Primitivevariable {contact_angle | edc_product | gas_volume_fraction | mixture_fraction | pressure | progress_variable | scalar_variance | second_mixture_fraction | solid_volume_fraction | soot_mass_fraction | soot_nuclei_mass_fraction | temperature | turbulent_dissipation | turbulent_frequency | turbulent_helmholtz_function | turbulent_kinetic_energy | turbulent_v2 | volume_of_fluid | x_solid_velocity | x_velocity | y_solid_velocity | y_velocity | z_solid_velocity | z_velocity} {=} Value

Summary

Value for the specified variable (in consistent units). Value can be a constant or a string function of position (x,y,z), time (t), and any global variable.

The function string must be enclosed in quotes if it has spaces or commas. For example: x_velocity = “min(1, 0.1*t)”

Parameter

Value

Default

PrimitiveVariable

{contact_angle | edc_product | gas_volume_fraction | mixture_fraction | pressure | progress_variable | scalar_variance | second_mixture_fraction | solid_volume_fraction | soot_mass_fraction | soot_nuclei_mass_fraction | temperature | turbulent_dissipation | turbulent_frequency | turbulent_helmholtz_function | turbulent_kinetic_energy | turbulent_v2 | volume_of_fluid | x_solid_velocity | x_velocity | y_solid_velocity | y_velocity | z_solid_velocity | z_velocity}

–

{=}

{= | are | is}

–

Value

“string”

–

Apply Pressure Penalty

Syntax

Apply Pressure Penalty [ Of PenaltyValue ]

Summary

Apply a penalty term on the open boundary pressure.

Description

Apply a DG-like penalty term to the open boundary pressure. This can improve stability for tets and non-orthogonal meshes on open boundaries.


Characteristic_Length

Syntax

Characteristic_Length {=} Characteristic length

Summary

Specify characteristic length for possible entrainment on open pressure specified boundary.

Parameter

Value

Default

{=}

{= | are | is}

–

Characteristic length

real

1.0

Emissivity Spectral File Name

Syntax

Emissivity Spectral File Name {=} Name

Summary

Specify the file name for defining spectral radiation properties on a surface.

Parameter

Value

Default

{=}

{= | are | is}

–

Name

string

–

Entrain Local Values

Syntax

Entrain Local Values

Summary

If the flow re-circulates at the open, entrain the local values rather than specified far-field values. This is applied to scalars at the open (not to velocity or pressure) and if activated will entrain the local scalar value from the previous time step rather than the user-specified far-field value.


External Field For

Syntax

External Field For VariableName [{of} Species] {=} ExtFieldName [ Of Size Value With Multiplier {=} Multiplier ]

Summary

Name of the field that is to be transferred in. For species equation, specify variable as “mass fraction of” followed by the species name for transfers associated with separated individual species field names.

Parameter

Value

Default

VariableName

string

–

Species

string

–

{=}

{= | are | is}

–

ExtFieldName

string

–

Emissivity

Syntax

Emissivity {=} value

Summary

Constant value for emissivity variable.

Parameter

Value

Default

{=}

{= | are | is}

–

value

“string”

–

Flow Must Exit Domain

Syntax

Flow Must Exit Domain

Summary

warning{This command is deprecated and will no longer have any effect. It will be completely removed in a future version of Fuego.}


Function For

Syntax

Function For {contact_angle | edc_product | gas_volume_fraction | mixture_fraction | pressure | progress_variable | scalar_variance | second_mixture_fraction | solid_volume_fraction | soot_mass_fraction | soot_nuclei_mass_fraction | temperature | turbulent_dissipation | turbulent_frequency | turbulent_helmholtz_function | turbulent_kinetic_energy | turbulent_v2 | volume_of_fluid | x_solid_velocity | x_velocity | y_solid_velocity | y_velocity | z_solid_velocity | z_velocity} {=} FuncName [ In The {t | x | y | z} Direction ]

Summary

Name of function to use for the given variable, in the specified direction.

Parameter

Value

Default

PrimitiveVariable

{contact_angle | edc_product | gas_volume_fraction | mixture_fraction | pressure | progress_variable | scalar_variance | second_mixture_fraction | solid_volume_fraction | soot_mass_fraction | soot_nuclei_mass_fraction | temperature | turbulent_dissipation | turbulent_frequency | turbulent_helmholtz_function | turbulent_kinetic_energy | turbulent_v2 | volume_of_fluid | x_solid_velocity | x_velocity | y_solid_velocity | y_velocity | z_solid_velocity | z_velocity}

–

{=}

{= | are | is}

–

FuncName

string

–

Function For Emissivity

Syntax

Function For Emissivity {=} functionName [ In The {t | x | y | z} Direction ]

Summary

Name of the function to use for the emissivity in the given direction (default direction = time).

Parameter

Value

Default

{=}

{= | are | is}

–

functionName

string

–

Function For Mass_Fraction

Syntax

Function For Mass_Fraction {=} FuncName In The {t | x | y | z} Direction

Summary

Name of the mass fraction function to use for all species in the given direction. Note that this must be a Multicolumn function

Parameter

Value

Default

{=}

{= | are | is}

–

FuncName

string

–

Direction

{t | x | y | z}

–

Function For Mole_Fraction

Syntax

Function For Mole_Fraction {=} FuncName In The {t | x | y | z} Direction

Summary

Name of the mass fraction function to use for all species in the given direction. Note that this must be a Multicolumn function

Parameter

Value

Default

{=}

{= | are | is}

–

FuncName

string

–

Direction

{t | x | y | z}

–

Function For Radiation Boundary Temperature

Syntax

Function For Radiation Boundary Temperature {=} functionName

Summary

Name of function to use for the radiation_boundary_temperature variable

Parameter

Value

Default

{=}

{= | are | is}

–

functionName

string

–

Function For Radiation Environment Temperature

Syntax

Function For Radiation Environment Temperature {=} functionName

Summary

Name of function to use for the radiation_environment_temperature variable

Parameter

Value

Default

{=}

{= | are | is}

–

functionName

string

–

Function For Transmissivity

Syntax

Function For Transmissivity {=} functionName [ In The {t | x | y | z} Direction ]

Summary

Name of function to use for the transmissivity variable

Parameter

Value

Default

{=}

{= | are | is}

–

functionName

string

–

Function For Transparent Band Emissivity

Syntax

Function For Transparent Band Emissivity {=} functionName [ In The {t | x | y | z} Direction ]

Summary

Name of function to use for the transparent emissivity band for spectral emissivity on surfaces.

Parameter

Value

Default

{=}

{= | are | is}

–

functionName

string

–

Function For Total_Pressure

Syntax

Function For Total_Pressure {=} Pressure function In The {t | x | y | z} Direction

Summary

total pressure function name

Parameter

Value

Default

{=}

{= | are | is}

–

Pressure function

string

–

Direction

{t | x | y | z}

–

Function For Wall Temperature

Syntax

Function For Wall Temperature {=} functionName [ In The {t | x | y | z} Direction ]

Summary

Name of function to use for the wall_temperature variable, in the specified direction.

Parameter

Value

Default

{=}

{= | are | is}

–

functionName

string

–

Inline Function For

Syntax

Inline Function For {contact_angle | edc_product | gas_volume_fraction | mixture_fraction | pressure | progress_variable | scalar_variance | second_mixture_fraction | solid_volume_fraction | soot_mass_fraction | soot_nuclei_mass_fraction | temperature | turbulent_dissipation | turbulent_frequency | turbulent_helmholtz_function | turbulent_kinetic_energy | turbulent_v2 | volume_of_fluid | x_solid_velocity | x_velocity | y_solid_velocity | y_velocity | z_solid_velocity | z_velocity} {=} FuncStr

Summary

warning{This command is deprecated. Regular BCs now support using string functions directly}

Parameter

Value

Default

PrimitiveVariable

{contact_angle | edc_product | gas_volume_fraction | mixture_fraction | pressure | progress_variable | scalar_variance | second_mixture_fraction | solid_volume_fraction | soot_mass_fraction | soot_nuclei_mass_fraction | temperature | turbulent_dissipation | turbulent_frequency | turbulent_helmholtz_function | turbulent_kinetic_energy | turbulent_v2 | volume_of_fluid | x_solid_velocity | x_velocity | y_solid_velocity | y_velocity | z_solid_velocity | z_velocity}

–

{=}

{= | are | is}

–

FuncStr

“string”

–

Integer Data For Subroutine

Syntax

Integer Data For Subroutine SubName {=} Values…

Summary

List of integer data values to be passed down in to the user subroutine. These values may be changed by the user subroutine.

Parameter

Value

Default

SubName

string

–

{=}

{= | are | is}

–

Values

integer…

–

Momentum Entrainment

Syntax

Momentum Entrainment {=} {computed | specified | tangential}

Summary

Select how momentum is entrained at the open BC.

Description

The available options are COMPUTED, TANGENTIAL, or SPECIFIED (default).

The default momentum entrainment (SPECIFIED) entrains the user-specified velocities at the open when flow enters the domain.

The computed momentum entrainment (COMPUTED) calculates a normal velocity component using the local mass flux and density, and a tangential component from the user specification on the boundary. This can have stability issues at high vorticity, but often gives better behavior for open BCs that are primarily inflowing or entraining.

It may be preferable to omit the normal component of entrained momentum at an open BC that is primarily exiting the domain (TANGENTIAL) or to simply entrain the user-specified velocities (SPECIFIED).

Parameter

Value

Default

{=}

{= | are | is}

–

EntrainmentMethod

{computed | specified | tangential}

–

Mass_Fraction

Syntax

Mass_Fraction Species {=} Mass fraction

Summary

Value for the mass fraction of selected species. Can be a constant value or a string function of space (x,y,z), time (t), and any global variable.

Parameter

Value

Default

Species

string

–

{=}

{= | are | is}

–

Mass fraction

“string”

–

Mole_Fraction

Syntax

Mole_Fraction Species {=} Mole fraction

Summary

Value for the mole fraction of selected species. Can be a constant value or a string function of space (x,y,z), time (t), and any global variable.

Parameter

Value

Default

Species

string

–

{=}

{= | are | is}

–

Mole fraction

“string”

–

Omit Diffusion Terms

Syntax

Omit Diffusion Terms

Summary

Deactivate the diffusion terms on an open boundary.

Description

It may be preferable to omit the diffusion terms on open open boundaries, but retain them (default) on confined open boundaries such as duct flow. This is only applied to the momentum equation.


Post Process Delta Area

Syntax

Post Process Delta Area

Summary

Request post processing of delta area on this mesh part.

Description

Area change can be post-processed on this mesh part for laminar or turbulent flows. This option calculates the absolute value of area change after each iteration of a time step, writes it to the log and stores the last value for a given step. The value can be accessed by solution control and used as a criterion in the evaluator. To access this value use region_name.MaxDeltaArea(n) where for area change in the x-direction n=1, area change in the y-direction n=2, and area change in the z-direction n=3.

Note that MaxDeltaArea(1) will return the maximum area change in x-direction if the request to post process this value was made on more than one boundary in a given region.


Post Process Delta Mass Flow Rate

Syntax

Post Process Delta Mass Flow Rate

Summary

Request post processing of delta mass flow rate on this mesh part.

Description

Mass flow rate change can be post-processed on this mesh part for laminar or turbulent flows. This option calculates the absolute value of mass flow rate change after each iteration of a time step, writes it to the log and stores the last value for a given step. The value can be accessed by solution control and used as a criterion in the evaluator. To access this variable use region_name.MaxDeltaMassFlowRate(0).

Note that MaxDeltaMassFlowRate(0) will return the maximum mass flow rate change if the request to post process this value was made on more than one boundary in a given region.


Post Process Delta Pressure

Syntax

Post Process Delta Pressure

Summary

Request post processing of delta pressure on this mesh part.

Description

Pressure change can be post-processed on this mesh part for laminar or turbulent flows. This option calculates the absolute value of pressure change after each iteration of a time step, writes it to the log and stores the last value for a given step. The value can be accessed by solution control and used as a criterion in the evaluator. To access this value use region_name.MaxDeltaPressure(n) where for pressure change in the x-direction n=1, pressure change in the y-direction n=2, and pressure change in the z-direction n=3.

Note that MaxDeltaPressure(1) will return the maximum pressure change in x-direction if the request to post process this value was made on more than one boundary in a given region.


Post Process Delta Thrust

Syntax

Post Process Delta Thrust

Summary

Request post processing of delta thrust on this mesh part.

Description

Thrust change can be post-processed on this mesh part for laminar or turbulent flows. This option calculates the absolute value of thrust change after each iteration of a time step, writes it to the log and stores the last value for a given step. The value can be accessed by solution control and used as a criterion in the evaluator. To access this value use region_name.MaxDeltaThrust(n) where for thrust change in the x-direction n=1, thrust change in the y-direction n=2, and thrust change in the z-direction n=3.

Note that MaxDeltaThrust(1) will return the maximum thrust change in x-direction if the request to post process this value was made on more than one boundary in a given region.


Postprocess

Syntax

Postprocess FluxType Flux Of {conserved_enthalpy | continuity | edc_product | enthalpy | mixture_fraction | nuclei | progress_variable | scalar_variance | second_mixture_fraction | solid_volume_fraction | soot | species | temperature | turbulent_dissipation | turbulent_frequency | turbulent_helmholtz_function | turbulent_kinetic_energy | turbulent_v2 | volume_of_fluid | x_momentum | x_solid_momentum | y_momentum | y_solid_momentum | z_momentum | z_solid_momentum} [ As aliases… ]

Summary

Enable nodal flux post-processing for a given equation. Flux types can be “total”, “advective”, or “diffusive”. Integrated fluxes will also be output to global variables for post-processing or use in other string functions.

By default the variables will be named based on the equation and sideset they are applied to as bc_FluxType_EquationName_flux_SurfaceName. However, if you want to assign a more compact or descriptive name you can provide it with

POSTPROCESS TOTAL FLUX OF Continuity AS mdot1

When post-processing enthalpy, the average temperature is also output as a global variable. If you provide only one alias the enthalpy flux uses your alias and the average temperature is automatically named. If you provide two aliases the first is used for enthalpy and the second is used for temperature.

POSTPROCESS TOTAL FLUX OF ENTHALPY AS hFlux
POSTPROCESS TOTAL FLUX OF ENTHALPY AS hFlux Tavg

When post-processing species, the post-processor is run for each species that is solved for. This means that there is no post-processor run on the last species (which is determined by a fractional balance). If you provide aliases for the species post-processor you should provide one for each post-processed species. For example, in a problem with O2, CO2, and N2 (in that order) you could use:

POSTPROCESS TOTAL FLUX OF SPECIES AS mdotO2 mdotCO2

Parameter

Value

Default

FluxType

string

–

equation

{conserved_enthalpy | continuity | edc_product | enthalpy | mixture_fraction | nuclei | progress_variable | scalar_variance | second_mixture_fraction | solid_volume_fraction | soot | species | temperature | turbulent_dissipation | turbulent_frequency | turbulent_helmholtz_function | turbulent_kinetic_energy | turbulent_v2 | volume_of_fluid | x_momentum | x_solid_momentum | y_momentum | y_solid_momentum | z_momentum | z_solid_momentum}

–

Progress_Variable

Syntax

Progress_Variable ProgressVariableName {=} Value

Summary

Constant value for the progress variable of selected scalars.

Parameter

Value

Default

ProgressVariableName

string

–

{=}

{= | are | is}

–

Value

real

–

Real Data For Subroutine

Syntax

Real Data For Subroutine SubName {=} Values…

Summary

List of real data values to be passed down in to the user subroutine. These values may be changed by the user subroutine.

Parameter

Value

Default

SubName

string

–

{=}

{= | are | is}

–

Values

real…

–

Radiation Boundary Temperature

Syntax

Radiation Boundary Temperature {=} value

Summary

Constant value for radiation_boundary_temperature variable.

Parameter

Value

Default

{=}

{= | are | is}

–

value

“string”

–

Radiation Boundary Temperature Field

Syntax

Radiation Boundary Temperature Field {=} FieldName

Summary

Name of the field to use for the radiation boundary temperature.

Parameter

Value

Default

{=}

{= | are | is}

–

FieldName

string

–

Radiation Environment Temperature

Syntax

Radiation Environment Temperature {=} value

Summary

Constant value for radiation_environment_temperature variable.

Parameter

Value

Default

{=}

{= | are | is}

–

value

“string”

–

Radiation Environment Temperature Field

Syntax

Radiation Environment Temperature Field {=} FieldName

Summary

Name of the field to use for the radiation environment temperature.

Parameter

Value

Default

{=}

{= | are | is}

–

FieldName

string

–

Sponge Layer Blending Function

Syntax

Sponge Layer Blending Function {=} {heaviside | linear}

Summary

Options are Heaviside or Linear. Linear gradually applies the sponge forcing across the layer, and Heaviside applies the full sponge forcing across the entire sponge layer. Default is heaviside.

Parameter

Value

Default

{=}

{= | are | is}

–

Value

{heaviside | linear}

–

Sponge Layer Thickness

Syntax

Sponge Layer Thickness {=} Value

Summary

Distance the sponge layer will propagate into the domain normal to the open boundary condition’s surface

Parameter

Value

Default

{=}

{= | are | is}

–

Value

real

–

Sponge Layer Viscosity

Syntax

Sponge Layer Viscosity {=} Value

Summary

Value of the viscosity applied within the sponge layer

Parameter

Value

Default

{=}

{= | are | is}

–

Value

real

–

Sponge Layer Viscosity Type

Syntax

Sponge Layer Viscosity Type {=} {absolute | multiple}

Summary

Options are multiple or absolute. The Multiple option uses the product of the molecular viscosity specified sponge layer viscosity to calculate the forcing term. The Absolute option just uses the specified sponge layer viscosity for calculating the forcing term. Multiple is the default

Parameter

Value

Default

{=}

{= | are | is}

–

Value

{absolute | multiple}

–

Subroutine For

Syntax

Subroutine For {contact_angle | edc_product | gas_volume_fraction | mixture_fraction | pressure | progress_variable | scalar_variance | second_mixture_fraction | solid_volume_fraction | soot_mass_fraction | soot_nuclei_mass_fraction | temperature | turbulent_dissipation | turbulent_frequency | turbulent_helmholtz_function | turbulent_kinetic_energy | turbulent_v2 | volume_of_fluid | x_solid_velocity | x_velocity | y_solid_velocity | y_velocity | z_solid_velocity | z_velocity} {=} Subroutine

Summary

Name of the subroutine to use for this variable.

Parameter

Value

Default

PrimitiveVariable

{contact_angle | edc_product | gas_volume_fraction | mixture_fraction | pressure | progress_variable | scalar_variance | second_mixture_fraction | solid_volume_fraction | soot_mass_fraction | soot_nuclei_mass_fraction | temperature | turbulent_dissipation | turbulent_frequency | turbulent_helmholtz_function | turbulent_kinetic_energy | turbulent_v2 | volume_of_fluid | x_solid_velocity | x_velocity | y_solid_velocity | y_velocity | z_solid_velocity | z_velocity}

–

{=}

{= | are | is}

–

Subroutine

string

–

Subroutine For Emissivity

Syntax

Subroutine For Emissivity {=} subroutineName

Summary

Name of the user subroutine to use for the emissivity variable.

Parameter

Value

Default

{=}

{= | are | is}

–

subroutineName

string

–

Subroutine For Mass_Fraction

Syntax

Subroutine For Mass_Fraction {=} Subroutine

Summary

Name of the subroutine to use for the mass fraction. ALL species mass fractions must be assigned by this subroutine.

Parameter

Value

Default

{=}

{= | are | is}

–

Subroutine

string

–

Subroutine For Mole_Fraction

Syntax

Subroutine For Mole_Fraction {=} Subroutine

Summary

Name of the subroutine to use for the mole fractions. ALL species mole fractions must be assigned by this subroutine.

Parameter

Value

Default

{=}

{= | are | is}

–

Subroutine

string

–

Subroutine For Radiation Boundary Temperature

Syntax

Subroutine For Radiation Boundary Temperature {=} subroutineName

Summary

Name of the user subroutine to use for the radiation_boundary_temperature variable.

Parameter

Value

Default

{=}

{= | are | is}

–

subroutineName

string

–

Subroutine For Radiation Environment Temperature

Syntax

Subroutine For Radiation Environment Temperature {=} subroutineName

Summary

Name of the user subroutine to use for the radiation_environment_temperature variable.

Parameter

Value

Default

{=}

{= | are | is}

–

subroutineName

string

–

Subroutine For Transmissivity

Syntax

Subroutine For Transmissivity {=} subroutineName

Summary

Name of the user subroutine to use for the transmissivity variable.

Parameter

Value

Default

{=}

{= | are | is}

–

subroutineName

string

–

Subroutine For Transparent Band Emissivity

Syntax

Subroutine For Transparent Band Emissivity {=} subroutineName

Summary

Name of the user subroutine to use for the transparent emissivity band for spectral emissivity on surfaces.

Parameter

Value

Default

{=}

{= | are | is}

–

subroutineName

string

–

Subroutine For Total_Pressure

Syntax

Subroutine For Total_Pressure {=} Subroutine

Summary

Name of the subroutine to use for pressure.

Parameter

Value

Default

{=}

{= | are | is}

–

Subroutine

string

–

Subroutine For Wall Temperature

Syntax

Subroutine For Wall Temperature {=} subroutineName

Summary

Name of the user subroutine to use for the wall_temperature variable.

Parameter

Value

Default

{=}

{= | are | is}

–

subroutineName

string

–

Transparent Band Emissivity

Syntax

Transparent Band Emissivity {=} value

Summary

Constant value to use for the emissivity in the transparent band for spectral surfaces.

Parameter

Value

Default

{=}

{= | are | is}

–

value

“string”

–

Total_Pressure

Syntax

Total_Pressure {=} Pressure

Summary

Constant value for the total pressure.

Parameter

Value

Default

{=}

{= | are | is}

–

Pressure

real

–

Transmissivity

Syntax

Transmissivity {=} value

Summary

Constant value for transmissivity variable.

Parameter

Value

Default

{=}

{= | are | is}

–

value

“string”

–

Turbulence_Intensity

Syntax

Turbulence_Intensity {=} Turbulent intensity

Summary

Specify turbulent intensity for use in the calculation for the entrainment value of turbulent kinetic energy when there is possible entrainment on open pressure specified boundary.

Parameter

Value

Default

{=}

{= | are | is}

–

Turbulent intensity

real

–

Use Sponge Layer

Syntax

Use Sponge Layer

Summary

Indicator that a sponge layer should be implemented next to this open boundary condition


Wall Temperature

Syntax

Wall Temperature {=} value

Summary

Value for wall_temperature variable. Can be a constant or a string function of space (x,y,z), time (t) or global variables.

Parameter

Value

Default

{=}

{= | are | is}

–

value

“string”

–