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Introducing a scalar field for buoyancy production in k-epsilon |
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October 22, 2018, 13:20
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Introducing a scalar field for buoyancy production in k-epsilon
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Senior Member
CFD_Lovers
Join Date: Mar 2015
Posts: 168
Rep Power: 11  |
Hi dear FOAMers!
I want to add the gradient of a scalar filed (like S) for calculation the production term due to buoyancy in k and epsilon equations. So I can make the new turbulence model by defining the coefficients and gravitational acceleration which are needed for calculating the buoyancy production. But I have no idea how should I do the procedure to make the modified k-epsilon model read the scalar values from the case?!? In brief: production due to buoyancy=Gb=beta*C3e*g*(dS/dy) Problem is dS/dy , S is the scalar filed which is advected in the domain by velocity. Best REGARDS 
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