# 7.12.6. Symmetry Boundary Condition On Surface

Scope

  Fuego Region

Summary

  Defines a symmetry plane boundary condition on a named surface of the mesh.

    begin Symmetry Boundary Condition On Surface Surfacename

       Emissivity Spectral File Name {=} Name

       Emissivity {=} value

       Function For Emissivity {=} functionName [ 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  ]

       Radiation Boundary Temperature {=} value

       Radiation Boundary Temperature Field {=} FieldName

       Radiation Environment Temperature {=} value

       Radiation Environment Temperature Field {=} FieldName

       Subroutine For Emissivity {=} subroutineName

       Subroutine For Radiation Boundary Temperature {=} subroutineName

       Subroutine For Radiation Environment Temperature {=} subroutineName

       Subroutine For Transmissivity {=} subroutineName

       Subroutine For Transparent Band Emissivity {=} subroutineName

       Transparent Band Emissivity {=} value

       Transmissivity {=} value

    end Symmetry Boundary Condition On Surface Surfacename

## 7.12.6.1. Line Commands

###### 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 | –

###### Emissivity

Syntax

  Emissivity {=} value

Summary

  Constant value for emissivity variable.

Parameter | Value | Default
--- | --- | ---
{=} | {= | are | is} | –
value | “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 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 | –

###### 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 | –

###### 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 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 | –

###### 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” | –

###### Transmissivity

Syntax

  Transmissivity {=} value

Summary

  Constant value for transmissivity variable.

Parameter | Value | Default
--- | --- | ---
{=} | {= | are | is} | –
value | “string” | –