k-omega SST vs V2-f
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Hi all,
i'm trying to compare the performace of k-omega SST vs V2f. I'm simulating an hill. this is the geometry of the simulation: link profile at inlet should be such that the flow is in fully developed state. The paper provide me only the velocity profile. To get the other profiles, i've setup a simulation of a flat terrain with periodic boundary conditions, as explained to me in this thread. Residuals of the simulation with k-omega SST, for flat terrain (these are good): image Residuals of the simulation with V2f, for flat terrain (these aren't good): image As you can see the residuals tend to be periodic... After 350K iterations the periodic-pattern was still the same... Using the profiles of k, omega,... obtained from simulations above, and the velocity profiles from the paper, i'll get these results: Result of hill simulations I was expecting the k-omega SST to overstimate the recirculation region; this is the reason i have tryed the V2F. Anyway, i was also expecting the V2F to give better result in respect to k-omega SST; i was wrong... What can i do to improve the result of V2F? PS: 1 - all flat terrain simulations have: y+ < 1. 2 - y+ for hill simulations: image 3 - the Reynolds number should be < 4772. |
bump, i've changed the subject of the thread...
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