Extra terms in turbulence model transport equations
Hi,
I have been working on rewriting some parts of the kOmegaSST turbulence model, and recently realised there are some 'extra' terms in the transport equations for k and omega, notably  for omega: Code:
tmp<fvScalarMatrix> omegaEqn Code:
tmp<fvScalarMatrix> kEqn I have been using a combination of references, but these do not appear in any of them, so they must be an openFoam programming peculiarity. Does anyone know / could anyone explain where these terms come from / why we have them in the eqns? thanks very much in advance much appreciated jonathan 
This has been discussed in several places
But it is one of my favorite things in fluid mechanics for some reason :D. The definition of the advection operator is where the left side is the conservative form and the right side is the primitive form ( according to anishtain4 from gas dynamics lingo). The use if this term Code:
 fvm::Sp(fvc::div(phi_), k_) Code:
fvm::SuSp(fvc::div(phi_),k_) Code:
fvc::div(phi_) EDIT: There is actually a little bit of a discussion in "Computational Methods for Fluid Dynamics" by Ferziger and Peric' (3rd edition) on page 162 referring to the conservation of the kinetic energy equation. 
Hi Daniel,
apologies for the slow reply here  i saw your post and it helped a lot, however, things have been quite hectic this side, hence the late thanks. again, thanks for your help  much appreciated jonathan Quote:

No worries, I enjoy discussing this topic. If anyone else has some thoughts that could expand this information I would love to hear about it. I can always learn more on the topic!

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