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June 12, 2010, 20:08 |
Problem with Grid convergence study
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#1 |
New Member
Join Date: Jun 2010
Posts: 3
Rep Power: 16 |
I am simulating 5 degree slice of a cylinderical reactor having two inlets at the top face of the slice, one for solid fuel & one for oxygen inlet, and an outlet at the bottom face of the slice. This model has two symmetry face and the rest are walls.
I have created three meshes using CFX-mesh for my grid convergence study. I have used global mesh scaling factor, point control and infilation to generate three meshes for my study. However, the solutions from the three meshes are not consistent meaning, the solutions are not in increasing or decreasing order. I have tried quite a lot of time and problem persist. Is there any one who colud give me peaces of advice. regards, Dialo |
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June 14, 2010, 19:33 |
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#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,850
Rep Power: 144 |
This means you are not in the convergent section of the mesh sensitivity scale. You need a finer mesh again until the results start to be convergent.
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