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Showing results 1 to 5 of 5 Search took 0.00 seconds. Search: Posts Made By: immortality

Forum: OpenFOAM Running, Solving & CFD May 27, 2013, 18:18

Replies: 6 Grid Independence problem Views: 2,285 Posted By immortality criteria of independence hi I wonder that is there any criteria for grid independence? Mean how much difference in variables is acceptable? Whats the rule of thumb here generally and not case specific? For example the...

Forum: OpenFOAM Running, Solving & CFD May 23, 2013, 04:59

Replies: 6 Grid Independence problem Views: 2,285 Posted By immortality Hi I have found that all is because of a... Hi I have found that all is because of a vortex. when i fine the mesh,results change very much,because a vortex exists inside and when I fine mesh it shows its center pressure lower and lower. how...

Forum: OpenFOAM Running, Solving & CFD May 22, 2013, 15:01

Replies: 6 Grid Independence problem Views: 2,285 Posted By immortality its necessary to give more information now. ... its necessary to give more information now. there is a simple rectangular geometry.then whats the approach to study grid independence. 1)does the mesh have to be uniform or non uniform in studying?...

Forum: OpenFOAM Running, Solving & CFD May 21, 2013, 07:08

Replies: 6 Grid Independence problem Views: 2,285 Posted By immortality Hi dear Kyle I'm changing the grid sizes and... Hi dear Kyle I'm changing the grid sizes and expect that the results change very low after reaching to a fine enough mesh,and also I have used my BC's.so I don't use the same tutorials but its...

Forum: OpenFOAM Running, Solving & CFD May 20, 2013, 16:37

Replies: 6 Grid Independence problem Views: 2,285 Posted By immortality Grid Independence problem In the case I'm running I changed the mesh(350*20 the original like a shock tube case) and fined the grid(690*40)to and although the residuals are the same,but the values of variables change even I...

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