# 7.6.17.46.19. User_Function

Syntax

  Specific Heat [{of} SpeciesName] = User_Function [Name = name | X = x | X_Multiplier = x_multiplier | Multiplier = multiplier | Toggle = toggle | H0 = h0 | S0 = s0 | T_Standard = T_standard | P_Standard = P_standard]

Scope

  Aria Material

Summary

  Value from a user function

Description

  If X is temperature then an enthalpy evaluator is automatically provided. The reference state temperature, enthalpy, and entropy can optionally be provided via the T_standard, h0, and s0 parameters. All default to 0 if they are not provided.

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

  Toggle

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

Parameter | Value | Default
--- | --- | ---
{of} | {of | species | subindex} | –
SpeciesName | string | –
name | “string” | –
x | “string” | –
x_multiplier | real | 1
multiplier | real | 1
toggle | “string” | –
h0 | real | 0
s0 | real | 0
T_standard | real | 0
P_standard | real | 0