CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

On SIMPLE algorithm in compressible flow situation

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

LinkBack Thread Tools Display Modes
Old   October 11, 2001, 00:26
Default On SIMPLE algorithm in compressible flow situation
Abhijeet Vaidya
Posts: n/a
Respected sirs, As per the derivation of pressure correction equation in Patankar's SIMPLE algorithm,the density corrections are not directly incorporated. This makes the SIMPLE best suited for the incompressible calculations. Can I use this formulation for compressible subsonic flows directly ? e.g. flame propagation in a premixed fuel air mixture without detonation! Or in other words, where do I have to introduce density corrections, at M > 0.3 or at M >= 1. Thanking you !
  Reply With Quote

Old   October 12, 2001, 06:55
Default Re: On SIMPLE algorithm in compressible flow situa
Posts: n/a
In the continuity equation, the mass is

mass = density(new)*velocity(new)*area

= [density(old)+density(correction]*





velocity(correction)~ p(correction)

density(correction)~ p(correction) through

equation of state That is, you have extra term in pressure correction equation due to density change.

Reference paper: <A collocated finite volume method for predicting flows at all speeds> by I. Demirdzic etc, International J. for Numerical methods in fluids Vol. 16, p1029-1050, 1993

  Reply With Quote

Old   October 15, 2001, 02:20
Default Re: On SIMPLE algorithm in compressible flow situa
Jean van der Merwe
Posts: n/a
I searched for this article, but could not find it. Peter, can you help me. I would like to expand this formula to the Piso algorithm. This will also be used to enable the modelling of subsonic compressible flow.

Thanks in advance Jean
  Reply With Quote

Old   October 18, 2001, 05:46
Default Re: On SIMPLE algorithm in compressible flow situa
Posts: n/a
The title of the paper is:

A Collocated Finite Volume Method for Predicting Flows at all Speeds

by I. Demirdzic, Z. Lilek and M. Peric

If you really can not find it, pass me your Mail address or fax number to, I may give you a copy.
  Reply With Quote


Thread Tools
Display Modes

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
compressible flow calculation error using rhoSimpleFoam solver student4326 OpenFOAM Running, Solving & CFD 7 November 2, 2015 12:34
SIMPLE algorithm in 3D cylindrical coordinates zouchu Main CFD Forum 1 January 20, 2014 18:02
code for SIMPLE algorithm - 2D Lid driven cavity flow problem - Collocated grid h_amooie OpenFOAM Programming & Development 0 June 9, 2011 11:17
Compressible de Laval Nozzle Flow rw511 CFX 3 May 22, 2011 19:48
who knows compressible SIMPLE algorithm? peck110 Main CFD Forum 3 February 5, 2008 10:34

All times are GMT -4. The time now is 19:01.