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March 7, 2013, 06:29 |
small confusion on the div() term.
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#1 |
Member
Nikesh Bhattarai
Join Date: Nov 2011
Location: Sacheon, South Korea
Posts: 82
Rep Power: 13 |
Hii Foamers,
I am modifying one of the turbulence models. In that process I have to introduce a new term in the source code, D/Dt(k_/omega_) which can be written as d/dt(k_/omega_)+ fvc::div(phi_,k_/omega_) for incompressible flows. Also considering steady state, we have: D/Dt(k_/omega_) = fvc::div(phi_,k_/omega_) Now my doubt is::in openfoam, the RHS of equation is solved based on FVM so, when these terms are discretized, is the cell-volume already included in it or do we need to specify it in the source code itself? |
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March 7, 2013, 07:19 |
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#2 |
Member
Nikesh Bhattarai
Join Date: Nov 2011
Location: Sacheon, South Korea
Posts: 82
Rep Power: 13 |
Or to put it in another words......
what I want is "D/Dt(k/omega)" and not "integral of D/Dt(k/omega) dV". i.e. when I assign this new Field, volScalarField DDtkw = fvc::div(phi_,k_/omega_) what I get is DDtkw = integral of div(phi, k/omega) dV Did I get it right here? |
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March 7, 2013, 23:11 |
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#3 |
Member
Nikesh Bhattarai
Join Date: Nov 2011
Location: Sacheon, South Korea
Posts: 82
Rep Power: 13 |
Nobody with insights in this, really??
I had even posted this problem in another location, yet no response in there too.... http://www.cfd-online.com/Forums/ope...nce-terms.html Maybe the question is rather clearer in the above mentioned forum. Anyone???? help!! |
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