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Explicit Pressure Based Scheme

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Old   June 1, 2004, 12:38
Default Explicit Pressure Based Scheme
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Apurva
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Hi

Till now what ever pressure based scheme I have read are implicit, are there any explicit pressure based scheme.

Thanks

Apurva
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Old   June 1, 2004, 12:52
Default Re: Explicit Pressure Based Scheme
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Li Yang
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Really ?

if you read Versteeg's book, it tells you what is the explicit scheme on page 171, and then the Crank-Nicolson scheme and the fully implicit scheme on the subsequent papges.

Li
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Old   June 2, 2004, 21:52
Default Re: Explicit Pressure Based Scheme
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Mordorgie i grodrom
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Hello,

So how do you couple the pressure-velocity in case of an incompressible fluid?

Do you use the old pressure field to calculate the new velocity field and then adjust the pressure field afterwards?

Best Regards
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Old   June 3, 2004, 04:47
Default Re: Explicit Pressure Based Scheme
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CFD Learner
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Correct. You can read Versteeg's book. In page 142, it states that an initial pressure field is guessed....

Regards

Li
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Old   June 3, 2004, 20:01
Default Re: Explicit Pressure Based Scheme
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Mordorgie i grodrom
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SIMPLE alghorithm p.142.

Ok since my maths aren't my strongpoint I might be wrong here, but doesn't that make the calculation quite implicit (i.e. you dont't use all known values to calculate for instance x-velocity component in a node at a higher time-level)?
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