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Max residuals are far from poor quality cells |
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April 6, 2006, 07:40 |
Max residuals are far from poor quality cells
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#1 |
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Hello to everyone!
I have a hardly conveging task. Suspect cell with low internal angle. I cannot fully avoid them, but their number is negligible among perfect other cells. Remarkably, the regions of maximum residuals are at a long distance from those poor-quality cells. QUESTION: May I therefore conclude those cells are NOT the reason of my difficult covergence? Thank you. |
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April 6, 2006, 19:00 |
Re: Max residuals are far from poor quality cells
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#2 |
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Hi,
Check that the region of maximum residual is not simply convected from the region of poor mesh quality, but if not then yes, your conclusion sounds reasonable. regards, Glenn |
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April 6, 2006, 21:58 |
Re: Max residuals are far from poor quality cells
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#3 |
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Yes, Glenn, I did checked and re-checked it: the regions are 3D-space-separated; only one small piece of residual isosurface is located near (upstream) to the low-angle one, but is not overlapping and its shape is different from the low-angle isosurface piece.
Furthemore, the largest piece of (the highest) residual isosurface is located in the (central) area, where the grid if ~0.7-times finer than that in other areas. Thank you for your help and very best regards. Steven |
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