|May 22, 2012, 12:37||
Problem in collocated grid
Join Date: Jan 2012
Posts: 7Rep Power: 7
I am solving unsteady shock tube problem with pressure correction approach. I am solving 2 momentum equation, updated pressure correction equation for compressible case, Energy equation and Equation of state. I used Rhie & Chow formulation for dealing pressure checker boarding problem. I am using SIMPLE.
I have some issues in my code which are following:
My code is working for high relaxation parameter like from 0.5-0.9. But it is not working at low relaxation parameter like less than 0.5??????
Thanks in advance
|May 22, 2012, 21:33||
Join Date: Jan 2011
Posts: 130Rep Power: 8
I recommend you to apply modified Rhie and choe method introduced by Majumdar.
"Role of underrelaxation in momentum interpolation for calculation of flow with nonstaggered grids".
In this method numerical solving is independent of under-relaxation parameter. for me, It worked very well.
|compressible flow, simple algorithm|
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