CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

ForwardStep tutorial

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 22, 2005, 14:47
Default Hi Foamers I have tried the
  #1
New Member
 
Max
Join Date: Mar 2009
Posts: 24
Rep Power: 17
didomenico is on a distinguished road
Hi Foamers
I have tried the forwardStep tutorial and the results are not as they are presented in the Programmer's Guide. In particular the flow is chocked and only a normal shock ahead the obstacle is predicted. Changes in numerical discretization do not affect the results. If I start the calculation with a smaller obstacle's height (10% of the channel) I get a solution similar to the guide's picture (normal + oblique shocks) but switching to the original grid gives again the normal shock.
I have also checked with the isentropic tables that the ration A/A* is 4.2, therefore this channel should not be chocked, should it?
If you have any suggestion, let me know.
Thanks
Massimiliano
didomenico is offline   Reply With Quote

Old   November 2, 2005, 12:57
Default I have also tried this test ca
  #2
Member
 
Marco Kupiainen
Join Date: Mar 2009
Posts: 31
Rep Power: 17
kupiainen is on a distinguished road
I have also tried this test case some months ago. You should really look for the original paper by Woodward & Collella (JCP) for the correct results. I have posted some questions and issues with OpenFOAM solver for compressible problems. You will have problems using the existing OpenFOAM solvers for solving compressible problems.
kupiainen is offline   Reply With Quote

Reply


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
cfd tutorial Vin FLUENT 4 June 20, 2008 09:31
SonicFoam forwardStep Tutorial OF 14 tutlhino OpenFOAM Running, Solving & CFD 16 May 1, 2008 17:09
tutorial in LES and DES James M FLUENT 0 September 10, 2007 10:14
Any tutorial with VOF ? hayate CFX 0 August 12, 2007 03:41
tutorial 6 in Fluent 6.2 tutorial and Mesh pilli4u FLUENT 2 April 2, 2007 06:09


All times are GMT -4. The time now is 19:56.