|September 15, 2009, 15:05||
Grid for RSTM Calculations
Join Date: Jun 2009
Posts: 38Rep Power: 9
I'm running some calculations with OFs Launder-Gibson-RSTM and turbFoam solver.
Evaluating the results shows huge differnces to the expected values. I used a grid with y+~35 for the first cell due to the usage of wall functions.
I tried a lot to gain better results out of my simulation. One thing was to use a 'normal' Grid instead of the 'wall function adjusted bigger 1. cell' ones. And the results became better...
I'm a little bit confused now. Is my combination (LG-RSTM & turbFoam) a Low Reynolds Number configuration? Is it in OF not necessary to adjust the first cell size to be out of the viscous sublayer while using wall function?
I would be really grateful about every input which helps me out of my confuion.
Thanks pretty much & cheers,
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