16.4.4 Energy Equation

The energy equation for the mixture takes the following form:

where $k_{\rm eff}$ is the effective conductivity ( $\sum \alpha_k (k_k+ k_t)$), where $k_t$ is the turbulent thermal conductivity, defined according to the turbulence model being used). The first term on the right-hand side of Equation  16.4-7 represents energy transfer due to conduction. $S_E$ includes any other volumetric heat sources.

In Equation  16.4-7,

for a compressible phase, and $E_k = h_k$ for an incompressible phase, where $h_k$ is the sensible enthalpy for phase $k$.