## 23.4.4 Energy Equation

The energy equation for the mixture takes the following form:

 (23.4-7)

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,

 (23.4-8)

for a compressible phase, and for an incompressible phase, where is the sensible enthalpy for phase .

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