August 25, 2023 at 12:15 pmFAQParticipant
When solving for chemical species transport, the effect of enthalpy transport due to species diffusion can be included in the energy equation. If using the pressure-based solver, this option can be enabled by opening the Species Model panel and clicking the Diffusion Energy Source checkbox. In the density-based solver, this term is always included in the energy equation. In particular, when the Lewis number is much larger than 1 in any of the species, it may lead to large errors if this term is ignored. Related Documentation ANSYS FLUENT 17.0 Theory Guide – 5.2.1 Heat Transfer Theory ANSYS FLUENT 12.0 Theory Guide – 7.1.1 Species Transport Equation
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