POWER LAW DISCRETISATION SCHEME
Is power Law a first order scheme?
I found out that my predictions are better when using power Law compared second order upwind. Can anyone advise why this is happening? I found out that my convergence is faster with this. |
Re: POWER LAW DISCRETISATION SCHEME
What kind of problem are you solving? It depends on the ratio beetween adventive and diffusive terms. Luca
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Re: POWER LAW DISCRETISATION SCHEME
I am trying to predict the hydrodynamics of flow in stirred tank reactor of 300rpm. The mean velocities(axial, radial & tangential) & turbulent quantities are of interest to me.
Expecting yr reply |
Re: POWER LAW DISCRETISATION SCHEME
When you say "better" what does it mean? only faster convergence or a better fidelity to experimental case?Luca
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Re: POWER LAW DISCRETISATION SCHEME
Compare to experimental data, that is what i mean
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Re: POWER LAW DISCRETISATION SCHEME
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Re: POWER LAW DISCRETISATION SCHEME
Hi
In case of your problem, even the second order upwind will give worse results than given by Power Law. Although Power Law is not a good enough scheme, but in your problem flow dependency is much higher, which is neglected by Upwind. Vinod Dhiman |
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