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

Simulation of Supersonic flow

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

LinkBack Thread Tools Search this Thread Display Modes
Old   December 18, 2008, 08:27
Default Simulation of Supersonic flow
Morshed Alam
Posts: n/a
Hi all, I am Morshed from swinburne university of technology, Australia. I am using AVL fire to simulate supersonic flow from the exit of the nozzle. I am getting some result but the problem is I have to use very small time step and because of that my case.fla file is becoming very large. A message is showing in the case.fla file which is"Unable to locate specified memory" Does anyone know how to reduce the size of the case.fla file or how to solve this problem? please help me. I am new to CFD. I started on April 2008.

  Reply With Quote

Old   December 18, 2008, 14:14
Default Re: Simulation of Supersonic flow
Posts: n/a
Try Zeus Numerix CFD Expert
  Reply With Quote

Old   December 18, 2008, 16:34
Default Re: Simulation of Supersonic flow
Posts: n/a
I can give some pointers to help you, but I am not familiar with the programme you are using, nevertheless, and from your description, I guess you are using some kind of explicit segregated scheme (using very small time step is a stability restriction imposed by these schemes). Does your programme have a coupled solver? If you do not know the answer, check the documentation or ask your mentor. Super sonic flows are best simulated by coupled solvers, you can start with high value of the Courant number and then decreasing its value as the solution proceeds, Good luck.
  Reply With Quote

Old   December 24, 2008, 06:13
Default Re: Simulation of Supersonic flow
Posts: n/a
I think the problem is with your Saving Interval File. Don't save the Case file for each 10/20 iterations or 1s/2s, go for larger time saving iterval. I think with this will work.
  Reply With Quote


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
Help with slug flow simulation. Kes FLUENT 3 November 9, 2019 22:39
Trying to achieve supersonic flow in a pipe jpo FLUENT 15 October 26, 2015 09:03
Supersonic flow abishek FLUENT 3 July 28, 2008 07:07
flow simulation across a small fan jane luo Main CFD Forum 15 April 12, 2004 18:49
fluid flow fundas ram Main CFD Forum 5 June 17, 2000 22:31

All times are GMT -4. The time now is 19:24.