7.6.4.2.32. Phase_Average

Syntax: Density [{of} SpeciesName] = Phase_Average ([Subindex_A = subindex_a] | [Subindex_B = subindex_b])
Scope: Aria Material
Summary: Level set phase averaged density.
Description: $\rho = (1 - H(\phi)) \rho_A + H(\phi) \rho_B$

where $H(\phi)$ is the heaviside function evaluated at the level-set variable $\phi$ , $\rho_A$ is the density in phase A, and $\rho_B$ is the density in phase B.