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CG or AMG Solver

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Old   March 6, 2008, 03:54
Default CG or AMG Solver
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What is the best solver in Star-CD for incompressible, steady state model?

Is their any information about that?


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Old   March 6, 2008, 04:13
Default Re: CG or AMG Solver
Sachin Patil
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To the best of my knowledge , there is as such no information on which solver has to be used. I will prefer AMG solver as it has some advatages over CG. Actually you can use both solvers alternately and then see the difference in results (in my case I got exactly the same answers)

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Old   March 6, 2008, 05:29
Default Re: CG or AMG Solver
Anton Lyaskin
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In brief - AMG is much faster for big problems (like 1 million cells and bigger) but requires more memory.
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Old   March 12, 2008, 08:07
Default Re: CG or AMG Solver
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I would add that your result should be the same whatever solver you use. Otherwise the whole CFD would be pretty useless. Good comparison over different solvers could be found in:

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