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

Minimum Length nozzle

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 18, 2012, 16:37
Default Minimum Length nozzle
  #1
New Member
 
William
Join Date: Apr 2012
Posts: 1
Rep Power: 0
cksquall is on a distinguished road
Hi dear OF users

I am new in OpenFoam, and I am doing a project which design the nozzle by using the method of characteristic, first i get the contour and use blockMesh to creat the Mesh, and now here is my problem, which solver should i choose?

I assume that should be a isentropic flow, and set the boundary as attach, and using both sonicFoam/forwardStep and rhoCentralFoam/forwardStep , but both of them did not show the results i expect.

can anyone tell me which part i did wrong?

Thanks a lot for your help
Attached Files
File Type: gz openFoam.tar.gz (1.8 KB, 10 views)
cksquall is offline   Reply With Quote

Old   July 18, 2012, 16:23
Default
  #2
New Member
 
Niko Kivel
Join Date: Jul 2012
Posts: 4
Rep Power: 13
niko.kivel is on a distinguished road
Hi cksquall

I'm also new to OpenFOAM. I can't get my problem solved either
but concerning your problem, I have some remarks.
in "0/p" the "value" for totalpressure is missing, only p0 is given. further the "fieldInf" is only 1 Pa, I guess that's supposed to be closer to 1e5.

I'm no CFD specialist, but you build on a case with scaled physical properties, where 1m/s equals Ma=1, all this at 1K and 1Pa, so I'd put real world thermophysical properties, as well as real world Temps.

cheers
Niko
niko.kivel 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
code for designing a minimum length shock free nozzle staleyjj1981 Main CFD Forum 0 December 4, 2009 16:53
Length of sonic nozzle oe Main CFD Forum 2 September 16, 2008 20:28
calculate nozzle length oe Main CFD Forum 0 July 30, 2008 15:06
compressible flow in a counterflow nozzle d.vamsidhar FLUENT 0 November 24, 2005 02:45
minimum line length Jay FLUENT 3 May 17, 2004 19:33


All times are GMT -4. The time now is 08:18.