buoyancy term discretisation
I would like to know as how to discretise the buoyancy
term, using simpler algorithm, that occur in the
momentum equation. I am not able to get a clear
picture from the book of Patankar.
Re: buoyancy term discretisation
One possibility is to use the Boussinesq-Approximation if your temperatur variation is not big. An other way is to consider the $\rho* g$ Term as a source term, that would give you (after the Integration $\Delta V * \rho* g$. Try to get the book from Peric, Ferziner "Computational Fluid Dynamics" or something like that. Is realy a very good book. The Patankar is for beginners.
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