Scaled_Nat_Conv

Syntax

Bc No_Coverage_Flux For Energy ([{of} SpeciesName] | [{in} MaterialPhaseName] | [{ls} {a | b | c}]) {@ | at | for | on | over} Mesh Extent Name ([Touching TouchingMeshExtent] | [Opposing OpposingMeshExtent]) = Scaled_Nat_Conv [Using Data Specification Data Spec Name] ([Power_Output = power_output] | [Flux_Output = flux_output] | [Toggle = toggle] | [Multiplier = multiplier] | Scaling_Field = scaling_field | [Scaling = scaling] | [Global_Var = global_var] | [Time_Function = time_function])

Summary

Scaled natural convection energy flux

Description

Flux is given by:

(M)(SC)(GV)(f)fcn(t) h \left( T - T_{ref} \right)

M is given by MULTIPLIER, SC by SCALING, GV by the value of the global variable with name GLOBAL_VAR, fcn is a function with name TIME_FUNCTION, and f is a field with name SCALING_FIELD. h and T_{ref} are taken from the HEAT TRANSFER COEFFICIENT and BC REFERENCE TEMPERATURE expressions.

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.

Flux_Output

If specified, the average flux of the given BC/Src is calculated and stored into the global variable name specified as the flux_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}

–

Mesh Extent Name

string

–

TouchingMeshExtent

string

–

OpposingMeshExtent

string

–

Data Spec Name

string

–

power_output

“string”

–

flux_output

“string”

–

toggle

“string”

–

multiplier

real

1

scaling_field

“string”

–

scaling

real

1

global_var

“string”

–

time_function

“string”

–