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September 26, 2002, 05:00 |
2d incompressible polar problem
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#1 |
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I am having trouble solving the polar form of the Navier Stokes Equations when applied to a donut shape physical grid.
The lower boundary is moving at 10 RPM and the upper boundary is stationary. A book recommended that I solve the momentum equations sequentially and thus I did the following. The method used per iteration is the point by point method or Gauss seidel. I solve the angular momentum equations first until I get a linear result. Then I solve the radial velocities. As the solution solves an oscilation appears near the stationary boundary. No amount of relaxation factors will change it. I am using this within a SIMPLE algorithm. Any help would be appreciated. |
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