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May 14, 2010, 12:30
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Problem understanding rhoPisoFoam
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#1 |
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New Member
Matthias P
Join Date: May 2010
Posts: 16
Rep Power: 16  |
Hey i'm a newbie in Openfoam and try to understand the solution scheme of the solver rhoPisoFoam.
On of the first equations to be solved is the continuity equation for density included by rhoEqn.H. Now my question is what is solved by that equation and why i have to do so. Later on in pEqn.H the same headerfile is included once more. Why? Maybe somebody can help me understanding this. Thx Matthias |
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May 15, 2010, 14:21
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#2 |
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Senior Member
Alberto Passalacqua
Join Date: Mar 2009
Location: Ames, Iowa, United States
Posts: 1,912
Rep Power: 36 |
The first time you find an updated density at the new time, based on the old flux (see the flux is not recomputed, but the conservative one at old time is used).
In the pEqn, you find the updated density at the new time using the conserved flux at the current time. Best,
__________________
Alberto Passalacqua GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as in both physical and virtual formats (current status: http://albertopassalacqua.com/?p=1541) OpenQBMM - An open-source implementation of quadrature-based moment methods. To obtain more accurate answers, please specify the version of OpenFOAM you are using. 
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