pressure coorection
Hello all,
I am a PhD student, writing a CFD code for a laminar flow in cylindrical axisymetric coordinate. I can not converge my code:( and I think the problem is in exerting boundary conditions of pressure correction equation. I will be so thankful if anybody can send me the boundary conditions of Pressure correction equation in SIMPLE algorithm. Thanks everybody. Good Luck 
RE. Pressure correction equation in SIMPLE algorithm
Normaly there are 2 kinds of conditions at boundary, either the pressure at boundary is given and normal velocity is unknown or vice versa.
1.Given pressure : if guessed pressure field is arranged such that at boundary P*= Pgiven, then value of the P' at the boundary will be zero. 2.Given normal velocity: for example if the velocity has be given just at western face, just the coefficient of aw at pressure correction Eq will be zero, and other coefficients don't change. and u* at west shouldn't be corrected. (because it is given as boundary condition and does not change) :cool: it is illustrated in Numerical heat transfer and fluid flow by patankar. 
Have a look at the book 'An introduction to computational fluid dynamics, the finite volume method' by H. K. Versteeg & W. Malalasekera.

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