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

What is advantage of SIMPLE algorithm?

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

LinkBack Thread Tools Search this Thread Display Modes
Old   May 18, 2010, 02:40
Default What is advantage of SIMPLE algorithm?
Geon-Hong Kim
Join Date: Feb 2010
Location: Ulsan, Republic of Korea
Posts: 36
Rep Power: 16
Geon-Hong is on a distinguished road
I tried to solve incompressible Navier-Stokes equations using SIMPLE algorithm as pressure-velocity coupling procedure.

Why many commercial CFD tools use SIMPLE(or family of) algorithm as the pressure-velocity correction procedure to solve incompressible Navier-Stokes equations?

What is advantage of SIMPLE algorithm when it is compared to other methods such as fractional step method?

I need your help!

Thank you.

Best regards,
Geon-Hong is offline   Reply With Quote

Old   May 18, 2010, 07:46
Default SIMPLE vs FSM
Super Moderator
Hans Bihs
Join Date: Jun 2009
Location: Trondheim, Norway
Posts: 377
Rep Power: 17
valgrinda is on a distinguished road

The strength of the SIMPLE method is, that together with implicit time treatment of the flow variables you can efficiently obtain a steady state solution or use rather large time steps for unsteady flow computations (CFL>1).
In contrast, if you need a detailed and more accurate resolution of the time scale, than FSM is probably more attractive. Here explicit time treatment of the velocities and Chorinīs projection method for the pressure are used, which makes it comparably easy to devise a high-order time discretization scheme (for example 3rd or 4th order Runge-Kutta). Since the CFL criterion needs to be fulfilled, time steps are rather small.

valgrinda is offline   Reply With Quote


equations, incompressible, navier-stokes, simple algorithm

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Looking for simple, robust interface tracking algorithm ThomasTC Main CFD Forum 7 September 26, 2016 05:35
SIMPLE algorithm in 3D cylindrical coordinates zouchu Main CFD Forum 1 January 20, 2014 17:02
About Phase Coupled SIMPLE (PC-SIMPLE) algorithm Yan Kai Main CFD Forum 0 April 18, 2007 03:48
About Phase Coupled SIMPLE (PC-SIMPLE) algorithm Yan Kai FLUENT 0 April 13, 2007 23:17
SIMPLE algorithm Jonathan Castro Main CFD Forum 3 December 10, 1999 04:59

All times are GMT -4. The time now is 17:15.