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

Jet simulation

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

Reply
 
LinkBack Thread Tools Display Modes
Old   December 13, 2009, 19:57
Default Jet simulation
  #1
New Member
 
Michele Rosso
Join Date: Oct 2009
Posts: 4
Rep Power: 7
JackNapier is on a distinguished road
Send a message via MSN to JackNapier
Hi,

I'm a newbie of OF, but I'm trying to learn how to handle it.
I'd like to simulate a typical fluid dynamic case, i.e. an axisymmetric jet-flow in an open space.

Is there someone who can help me?

Thanks in advance

Michele
JackNapier is offline   Reply With Quote

Old   December 14, 2009, 03:38
Default
  #2
Senior Member
 
Markus Rehm
Join Date: Mar 2009
Location: Erlangen (Germany)
Posts: 176
Rep Power: 8
markusrehm is on a distinguished road
Hello,

have a look at makeAxialMesh for conversion into wedgy-type mesh

http://openfoamwiki.net/index.php/Contrib_MakeAxialMesh

and in
run/lesInterFoam/nozzleFlow2D
there is also an example of a blockMesh grid.

Hope that helps, regards, Markus.
markusrehm is offline   Reply With Quote

Old   December 14, 2009, 07:25
Default
  #3
New Member
 
Michele Rosso
Join Date: Oct 2009
Posts: 4
Rep Power: 7
JackNapier is on a distinguished road
Send a message via MSN to JackNapier
Hi Markus,

thank you very much for your quick replay.
I took a look at the tutorial you suggested me for the solver (interFoam): i think it is too advanced for my present knowledge,so can you help me?
Furthermore the case I'd like to simulate is easier I guess: in fact I want only to reproduce an air jet entering a not-bounded atmosphere where air is in rest.
If you could help me, I'd appreciate very much.

Thank you,

Michele
JackNapier is offline   Reply With Quote

Old   December 15, 2009, 03:25
Default
  #4
Senior Member
 
Markus Rehm
Join Date: Mar 2009
Location: Erlangen (Germany)
Posts: 176
Rep Power: 8
markusrehm is on a distinguished road
Hi Jack,

maybe turbFoam (transient) or simpleFoam (steady state) would be appropriate for you. But I wanted to tell you that the mesh is axisymmetric as you wanted.

Regards, Markus.
markusrehm is offline   Reply With Quote

Old   February 18, 2010, 13:38
Default Jet simulation
  #5
Member
 
hamdi
Join Date: Mar 2009
Posts: 72
Rep Power: 8
hamcer is on a distinguished road
I'm doing a numerical calculation of an injector by simplefoam solver, geometry is now axisymmetric (upperwall represents an area of torpido, interWall that of the outer surface of the jet type slip to see the behavior of velocity Uy, but I have two bad results:
1 - the Massflow is not constant when I apply CalcMasseFlow between inlet and outlet
2 - I have a pressure not stable
I spend a lot of time to make changes in my geometry and methods of calculation but I have not been successful;
click on this link to download my case.
http://www.sendspace.com/file/6nmw8l

If you have any ideas they are welcome.
Regards.
hamcer is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Jet fan and Tunnel simulation ahlo7 CFX 7 March 7, 2012 11:25
Synthetic (pulsatile) jet transient simulation aero CFX 0 November 6, 2009 02:10
Compressible Flow Simulation - business jet Tyler FLUENT 0 March 13, 2009 15:47
backflow in a jet simulation Hao CFX 0 October 3, 2008 02:23
Moving Jet Simulation psen CD-adapco 2 November 4, 2001 21:23


All times are GMT -4. The time now is 03:25.