turbulence model simulation in unsteady flow

February 4, 2005, 20:46

Hello~ I have simulated unsteady flow with various turbulence models(RANS). In two equations models case, the solution sometimes converges to steady state. I heard that this phenomenon is to dissipative characteristics of two-equation model. Actually I don't know this meaning exactly. Could you explain more detail to me ??

Is this related to the stagnation point anomaly called by Durbin.

Thanks in advance

Best regards

February 6, 2005, 04:12

February 12, 2005, 07:28

I did many tests and the model RANS which seems to me most effective to reproduce the unsteady behavior of a flow would be model SST. dd nvs

February 4, 2005, 20:46	turbulence model simulation in unsteady flow	#1
Chang Guest Posts: n/a	Hello~ I have simulated unsteady flow with various turbulence models(RANS). In two equations models case, the solution sometimes converges to steady state. I heard that this phenomenon is to dissipative characteristics of two-equation model. Actually I don't know this meaning exactly. Could you explain more detail to me ?? Is this related to the stagnation point anomaly called by Durbin. Thanks in advance Best regards

February 6, 2005, 04:12	Re: turbulence model simulation in unsteady flow	#2
yaghoub Guest Posts: n/a

February 12, 2005, 07:28	Re: turbulence model simulation in unsteady flow	#3
dd Guest Posts: n/a	I did many tests and the model RANS which seems to me most effective to reproduce the unsteady behavior of a flow would be model SST. dd nvs

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