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Apurva June 1, 2004 12:38

Explicit Pressure Based Scheme

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



Li Yang June 1, 2004 12:52

Re: Explicit Pressure Based Scheme
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.


Mordorgie i grodrom June 2, 2004 21:52

Re: Explicit Pressure Based Scheme

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

CFD Learner June 3, 2004 04:47

Re: Explicit Pressure Based Scheme
Correct. You can read Versteeg's book. In page 142, it states that an initial pressure field is guessed....



Mordorgie i grodrom June 3, 2004 20:01

Re: Explicit Pressure Based Scheme
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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