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convective term of temperature and species mass fraction |
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October 18, 2017, 12:15 |
convective term of temperature and species mass fraction
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#1 |
Member
Zhiyi Li
Join Date: Mar 2015
Location: Germany
Posts: 43
Rep Power: 11 |
Dear FOAMers,
I'm doing Large Eddy Simulation on the adelaide jet in hot co-flow burner (basically it is a jet). Because of some analysis, I need to write out the diffusive and convective terms of the temperature and species mass fraction. The diffusive term seems to be correct (see figure 1 ). But i'm not sure about the convective term (see figure 3 ). I also observe similar behavior for the velocity profile (see figure 5 and 6), and I have some pressure variation in the field (see figure 7). I wrote out the convective term of temperature and species mass fraction using these functions: Tconvec = -fvc::div(phi, T); Yconvec_[i] = -mvConvection->fvcDiv(phi, Yi); So the question is, are the convective terms reasonable? If not, what could be wrong? It seems that I have some instabilities in the pressure field? Thanks a lot Litchy |
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