|
[Sponsors] |
mach number and selection of the fluent solver |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
December 24, 2008, 02:55 |
mach number and selection of the fluent solver
|
#1 |
Guest
Posts: n/a
|
Hi everyone!
I am using fluent version 6.3 to simulate a compressible flow with the Mach number of 1.8. I met a great deal of convergence difficulty when I use the density based solver, while my computation gets convergent easily when I use the pressure based couple solver. My problem is at what range the fluent6.3 pressure based solver can give reliable results? And at what mach number one must use the density based solver? Thanks in advance! |
|
December 27, 2008, 07:49 |
Re: mach number and selection of the fluent solver
|
#2 |
Guest
Posts: n/a
|
The pressure based solver can be used for a wide range of flow simulation cases, even compressible and supersonic flows. You should only use the density based solver when you have tightly coupled flow parameters, from density, energy, momentum, as well as combustion and species transport.
You should use the pressure based solver for supersonic aerodynamics. You should use density based if you are doing supersonic flows with combustion and heat transfer (such as the ramjet). Hope that helps. |
|
December 27, 2008, 08:23 |
Re: mach number and selection of the fluent solver
|
#3 |
Guest
Posts: n/a
|
I should just add that you can in fact use either solver for almost all your cases. But as you've experienced, the density based solver takes much more effort and troubleshooting in controling convergence. Only use the density based solver when the performance is superior compared to the pressure based solver.
|
|
December 30, 2008, 02:13 |
Re: mach number and selection of the fluent solver
|
#4 |
Guest
Posts: n/a
|
Thank you very much ,zongtwi.
Regards, Lan |
|
April 24, 2011, 01:14 |
|
#5 |
New Member
layth
Join Date: Apr 2011
Posts: 10
Rep Power: 15 |
hello everyone
I need the (x.y) coordinates for axial gas turbine blade profile. please could anyone help me, and I will very happy and grateful for you . thanks in advance |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Solver Failure due to unrealistic high Mach number | Andreas | CFX | 1 | March 13, 2009 06:58 |
mach number and CFX 11.0 solver | turbinesv | CFX | 5 | January 5, 2009 06:43 |
Solver is finishing with huge Mach number | Fonzie | CFX | 1 | March 12, 2007 15:15 |
High Mach number solver error | Luke | CFX | 3 | January 31, 2007 23:26 |
High Mach number solver | Oliver Gloth (Gloth) | OpenFOAM Running, Solving & CFD | 0 | December 20, 2004 08:30 |