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February 9, 2012, 19:43 |
Dimension Mismatch - Spalart Allmaras
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#1 |
Member
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Friends,
I am simulating the tip vortices from a wing and from already published material, it has been noted that the production term ( S_tilda) of SA turbulence model has to be tweaked a bit to get better results. S_tilda is defined as = I want to change the Omega term to where , , and I have 2 questions on this. 1. How do I write Sij ? If I am not wrong it should be written as sqrt(2)*mag(symm(fvc::grad(U_))) 2. When I do write it like that, put a min function to get the min between 0 and S - Omega, I get a dimension mismatch as below Arguments of min have different dimensions dimensions : [0 0 0 0 0 0 0] and [0 0 -1 0 0 0 0] Can someone help me with this. Frankly, I don't see anything huge in this but I am a total noob when it comes to C++ Thanks, Kalyan |
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