Energy equation in Fluent
Fluent solves the following equation for nonisothermal single phase simulation involving gas flow in a duct:
https://www.sharcnet.ca/Software/Flu...th/img2304.gif According to Fluent manual: "Under the assumption that the Lewis number (Le) = 1, the conduction and species diffusion terms combine to give the first term on the righthand side of the above equation while the contribution from viscous dissipation appears in the nonconservative form as the second term." My question is where is the second term? The second term is the energy source term. 
S_h is all the energy that will be add from user sources or reactions.

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