CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

the limitation of the pressure-based and density based solvers?

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

Like Tree1Likes
  • 1 Post By LuckyTran

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 19, 2015, 04:53
Default the limitation of the pressure-based and density based solvers?
  #1
New Member
 
HALOUANE Yacine
Join Date: Jun 2015
Posts: 2
Rep Power: 0
halouaneyacine is on a distinguished road
Hello everyone,
I know that the pressure based solver is better for slow incompressible flow and the density-based solver is recommended for supersonic flow and shock waves simulation.
I'm wondering about the limitation of each solver?
when or where can I use them or cannot use them?

I prefer to give the reference of your answers and thank's a lot.
good luck.
halouaneyacine is offline   Reply With Quote

Old   November 20, 2015, 10:42
Default
  #2
Senior Member
 
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,654
Rep Power: 65
LuckyTran has a spectacular aura aboutLuckyTran has a spectacular aura aboutLuckyTran has a spectacular aura about
The pressure-based solver is not as suited for flows with rapidly changing properties compared with the density based solver. That's basically all that can be said.

Rapidly changing is with reference to the computational grid. So a finer grid in ranges of rapid property changes can also handle rapidly changing properties using the pressure-based solver. You should experiment with it for your problem to see which performs best for you.

If you want to know when you can or cannot use them, the answer is in most cases you can use both. Sometimes a particular feature is available only for the pressure-based solver or only available for the density-based solver, then you will have to use the one that you can use.
s1291 likes this.
LuckyTran is offline   Reply With Quote

Reply

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
Pressure based vs density based solver newbie384 FLUENT 2 July 5, 2013 03:04
realizing pressure based and density based solvers immortality OpenFOAM Running, Solving & CFD 1 June 16, 2013 13:07
pressure and density based solvers immortality OpenFOAM Running, Solving & CFD 0 November 24, 2012 15:59
pressure and density based solvers sun Main CFD Forum 0 November 8, 2004 07:20
Pressure vs Density based CFD solvers Danie Main CFD Forum 0 October 5, 2004 10:48


All times are GMT -4. The time now is 08:41.