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October 26, 2011, 06:47 |
Abnormal gradient at the inlet
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Member
lalupp
Join Date: Jul 2010
Location: India
Posts: 44
Rep Power: 15 |
My cfd code produced abnormal gradient in the solution, see attached PARAVIEW plot.
My problem is flow past a cube incomressible) 2nd order upwind disctisation (shown in fluent literature) green gauss gradinet,Turbulence SST-k-w Mesh : Tet Boundary conditions are no-slip , velocity inlet , outlet I tried various gradient limiting schemes like MINMOD,SUPERBEE,etc is it becouse of problem in grdient estimation or something else Surprisingly my ist oder upwing scheme is free from this problem. I tried NVD/TVD schemes All predicting the drag forces correctly but solution is not smooth problem area is inlet. |
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