[siw]

Hi,

I've just run a 3-D cube in a wall bounded domain at Re = 40,000 with SAS-SST. The purpose of the simulation was to see if a SAS-SST run could be set-up and run on my computer successfully. The results look reasonable.

I'm now repeating the simulation with URANS inc. SST (everything else being unchanged) for comparsion purposes.

I've read some papers about SAS-SST and as far as I can see there's only an additional term in the omega-equation, called QSAS.

So I assume that the computational expense (memory required and run time) would only be slightly greater for SAS-SST compared to URANS due to the QSAS term rather than being a significant rise in computational cost. Would that be a correct assumption? Do my other CFDer's use SAS-SST, since DES and LES are expensive for industrial tasks?

Thanks

PS. How can I get the eddy viscosity ratio in CFD-Post to colour the Q-criterion vortex core regions for showing the turbulence structure? I cannot find the turbulent eddy viscosity in CFD-Post or an equation to work it out.