thanks olivier ..
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icoPolynomial: chtMultiRegionSimpleFoam
Hello,
I am running a simulation with chtMultiRegionSimpleFoam which, apparently, runs ok. It has three solids and one fluid, namely, water. I set water properties in my thermophysicalProperties files and it works fine for rhoConst. When I tried to use icoPolynomial for equationOfState (and the respective changes in the heRhoThemo type) I could and the four polynomials without issues. However, and simulating I realized the fluid density never changes. The only way I got a variation in the fluid density was using a PerfectFluid in equationOfState. I'm using OpenFOAM 2.2.0. My themophysicalProperties file for fluid is: Code:
thermoType Thank you in advance. Vitor |
> the fluid density never changes.
Check fvSolution for water it has probably rhomin and rhomax like (my example) SIMPLE { momentumPredictor on; nNonOrthogonalCorrectors 0; pRefCell 0; pRefValue 100000; rhoMin rhoMin [1 -3 0 0 0] 1000; rhoMax rhoMax [1 -3 0 0 0] 3000; } |
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far too high and they were bounded by the values in fvSolution. Now I can focus in the real problem: why the densities are too high. Thank you very much. Vitor |
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I meet the same problem. Could you tell the detail how did you figure out relaxing T and rho. I used chtmultiregionFoam. Thanks for your help. |
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I used icoPolynomial in chtmultiregionfoma and I got very high Co number for water, os it was not converged. I think your explanation to this problem is pretty right, unfortunately I am a new foamer so I quite don't know how to fix this problem. You said that the solution is to relax T and rho, could you please tell me the detail or give me some hint to fix my problem. Thanks in advance. |
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I was wondering if you found a solution to this problem. I am facing a similar problem with my closed liquid domain where the Co blows up. I tried relaxing the solution and that did not help at all. Any help is appreciated Thank you so much |
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I did not solve this problem. Instead, I modified cht solver for my purpose. Good luck |
Thank you so much for the reply tbao. That is unfortunate though. I was hoping to find out a solution here. Hope someone else who faced a similar issue would be able to help
Praveen |
Dear Olivier
I want to know set the polynomial properties in other solvers? For example, in IcoFoam, PimpleDymFoam, etc? Best regards |
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