The energy equation for the mixture takes the following form:
where is the effective conductivity ( ), where is the turbulent thermal conductivity, defined according to the turbulence model being used). The first term on the right-hand side of Equation 23.4-7 represents energy transfer due to conduction. includes any other volumetric heat sources.
In Equation 23.4-7,
for a compressible phase, and for an incompressible phase, where is the sensible enthalpy for phase .