Originally Posted by jade m (Post 256730)

i've extensively researched k-epsilon and omega based models including sst.

I've read about the disadvantages of k-epsilon which are that it is only valid for fully turbulent flow and non-separated flows and that it can have stability issues due to numerical stiffness. Are there any advantages to the k-epsilon model? This models seems to still be a widely used model despite its disadvantages. In my (limited) experience, its validity only for fully turbulent flows and non-separated flows seems to narrow its applicability quite a bit.

Based on the advantages of sst and my experience, there does not appear to ever be any reason to choose k-epsilon over sst. Is this correct? What are the disadvantages of using sst?

Thanks in advance for any information. I would really like to determine the answer to these questions so i would be very grateful for any responses.