7.6.19.1.6. Exponential

Syntax: User Expression [{of} SpeciesName | {in} MaterialPhaseName | {ls} {a | b | c}] = Exponential [User_Tag = user_tag | Variable = variable | Constant = constant | Multiplier = multiplier | Exponent = exponent | Equations = Equations…]
Scope: Aria Material
Summary: Exponential user expression
Description: Provides an expression with the name given by the user_tag parameter using the provided exponential function. The provided user tag should not include operator, subindex, phase, component, or material phase prefixes or suffixes. See General Naming Convention for more detail about those. The value, $\phi$ , is calculated as $\phi = C + M e^{k X}$ where $X$ is the variable, $C$ is the constant, $M$ is the multiplier, and $k$ is the exponent. $C$ and $M$ are optional and default to $0$ and $1$ , respectively, if omitted