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Pressure coefficient in SIMPLE Algorithm

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Old   August 20, 2009, 11:36
Default Pressure coefficient in SIMPLE Algorithm
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Mohammad Haddadi
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hi everybody
I have a question about calculating pressure-correction Eq's coefficients.
I don't know how could I determine that, should I determine them after correcting u* and use new u* for calculating aI,J or by using guessed velocity field?
thank you.
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Old   August 21, 2009, 00:55
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i use the colocated grid along with momentum interpolation in that case when i am writing the cell face velocities ...they are the obtained by the linear interpolation of the cell centred velocities (the ones that were alredy predicted)...and hence in the pressure correction equations you have these cell face velocities that come into play.
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Old   August 22, 2009, 01:36
Mohammad Reza Hadian
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i use collocated grid and the calculation is :
1-solving u and v momentum and calculating u* and v*
2- calculating cell face velocities by momentum interpolation using calculated cell center u*, v* and cell face velocities of last iteration and time step.
3-solving pressure correction eq. (the cell face velocities calculated in step 2)
4- correcting cell center and cell face velocities
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pressure coefficient, simple

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