# pressure coorection

 Register Blogs Members List Search Today's Posts Mark Forums Read

 August 3, 2009, 01:59 pressure coorection #1 New Member   rosa amerian Join Date: Aug 2009 Posts: 1 Rep Power: 0 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

 August 20, 2009, 04:54 RE. Pressure correction equation in SIMPLE algorithm #2 New Member   Mohammad Haddadi Join Date: Aug 2009 Location: Tehran,Iran Posts: 4 Rep Power: 0 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) it is illustrated in Numerical heat transfer and fluid flow by patankar.

 August 20, 2009, 05:41 #3 Member   Join Date: Mar 2009 Posts: 55 Rep Power: 17 Have a look at the book 'An introduction to computational fluid dynamics, the finite volume method' by H. K. Versteeg & W. Malalasekera.

 Tags finite volume, pressure correction, simple

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are Off Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post Antech Main CFD Forum 0 April 25, 2006 02:15 Dan Moskal Main CFD Forum 0 October 24, 2002 22:02 chong chee nan FLUENT 0 December 29, 2001 05:13 HB &DS CFX 0 January 9, 2000 13:19 DS & HB Main CFD Forum 0 January 8, 2000 15:00

All times are GMT -4. The time now is 01:13.