# 7.16.1.20.17. Full_Viscous_Dissipation

Syntax

  Source For Energy [{of} SpeciesName | {in} MaterialPhaseName | {ls} {a | b | c}] {@ | at | for | on | over} MeshPartIdentifier = Full_Viscous_Dissipation [Power_Output = power_output | Toggle = toggle | Multiplier = multiplier]

Summary

  Full viscous dissipation source for energy equation

Description

  where is the optional multiplier parameter, the stress tensor excluding the pressure contribution, and the velocity.

  The following options are present in most boundary conditions/sources. The meaning of each option is as follows:

  Power_Output

    If specified, the total (integrated) power of the given BC/Src is calculated and stored into the global variable name specified as the power_output argument.

  Toggle

    If given, specifies which toggle block controls whether this BC is active or not.

Parameter | Value | Default
--- | --- | ---
{of} | {of | species | subindex} | –
SpeciesName | string | –
{in} | {in | material_phase} | –
MaterialPhaseName | string | –
{ls} | {levelset_phase | ls} | –
MeshPartIdentifier | string | –
power_output | “string” | –
toggle | “string” | –
multiplier | real | 1