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September 7, 2005, 06:17 |
Convergence
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#1 |
Guest
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Hi, Can the experts here give me their view on what they consider good convergence for engineering flows. The CFX documentation mentions it to be residual RMS=1 E -4. Is this appropriate? Does this change convergence criterion change from flow to flow? Adrian
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September 7, 2005, 10:22 |
Re: Convergence
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#2 |
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Hi,
you can check up the following in help: :Solver Modelling :>Advice on Flow Modelling :>>Monitoring and Obtaining Convergence :>>>MAX Residual Level Basically, 1e-4 is said to be "sufficient for most engineering applications", but the convergence criteria depends on the problem geometry and boundary conditions. I would recommend you to make a test on a typical flow problem that you are interested in: just run a few simulations with different residual levels, and check out the dependency of the flow quantity that you are looking for. Taner Baytekin |
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