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Convergence issues - Residuals flat for 2D inviscid flow |
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May 20, 2019, 19:14 |
Convergence issues - Residuals flat for 2D inviscid flow
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Ryan
Join Date: Apr 2019
Posts: 1
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Hi, I am very new to ansys fluent.
I believe I am having issues simulating 2D subsonic flow through a nozzle. My residuals plot for velocities and continuity does not seem to significantly decrease and remains constant (horizontal/flat). From what I have read, convergence of residual is satisfactory with a few orders of magnitude, which is not occurring here. From various forums and google searches, I have found that convergence issues mainly arise from mesh quality, possibly incorrect boundary conditions, and schemes utilized. I have tried to refine my mesh near the nozzle wall and review my boundary conditions, but still have not had much success. I've attached a number of screen shots of my setup and results of running simulation. Solver type - pressure based velocity inlet w/ magnitude set, velocity outlet with magnitude set (negative number for flow leaving) I'm kind of stuck on ideas on what to tweak or if there is something I'm missing, I can't seem to find it. Appreciate any help or advice! |
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boundary conditions, convergence issues, nozzleflow2d, residuals non convergence |
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