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-   -   Turbulence Model in axisymmetric nozzle simulation (http://www.cfd-online.com/Forums/fluent/118093-turbulence-model-axisymmetric-nozzle-simulation.html)

cric92 May 21, 2013 02:03

Turbulence Model in axisymmetric nozzle simulation
 
Hi

I am simulating an axisymmetric nozzle. I have an issue with which turbulence model to use. Currently I am using standard K-epsilon and i am not getting any shock wave inside the nozzle. When I switch to SST K omega i get shock wave in the flow.

I would like to ask which is the recommended turbulence model for these type of flow

oj.bulmer May 21, 2013 05:27

By intuition, std k-eps model is diffusive and hence may smear out the sharp gradients responsible for shocks. Have you tried realizable model? It is deemed to be good in modelling jets.

OJ

cric92 May 22, 2013 11:50

Yes, Just tried realizable.. it also shows a shock wave


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