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Y.harnane October 1, 2007 10:15

temperature limited
 
hello; I'm modeling turbulent mixed convection in periodic horizontal ribbed channel with heat flux at the horizontal face. when I used K-eps model and it's variants the simulation converged; but when I changed the model to K-omega and RSM with the same conditions after a long iterations I obtained a temperature limited.. I don't undrestand why? can any one help me please!! thank you

PratiK Mehta October 2, 2007 09:27

Re: temperature limited
 
try to change the underrelaxation factors for pressure and temperature. Use PISO for pressure velocity coupling and PRESTO for pressure discritization . If this doesnt help then you really should run the system unsteady.i hope thid helps

let me know ,hows the solution


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