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

Wall jet -tank with rotational flow in 3D

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 10, 2004, 00:25
Default Wall jet -tank with rotational flow in 3D
  #1
Rodrigo
Guest
 
Posts: n/a
Hi, I am modeling a tank with wall jets in 3D, but the flow field Fluent reports after solution converges (10-4) is really chaotic (lots of eddies and reverse flows). I am conducting a REAL experiment with exactly the same conditions and the flow is totally rotational. I am not sure though if I need to SPECIFY THE ROTATION-AXIS AND DIRECTION-AXIS in the fluid boudary conditions, because I didn't do it. I hope anybody can help me on this. Thanks,

Rodrigo
  Reply With Quote

Old   June 10, 2004, 04:52
Default Re: Wall jet -tank with rotational flow in 3D
  #2
George
Guest
 
Posts: n/a
No, you shouldn't need to specify the axis, it should be predicted by the simulation instead. I think you neet to check material properties and also - what turbulence model are you using? Convergence you should judge also by monitoring e.g. a point value in the tank in order to see if it levels out or oscillates. If it is the second case, than you don't have concergence.

Good luck

George
  Reply With Quote

Old   June 10, 2004, 15:05
Default Re: Wall jet -tank with rotational flow in 3D
  #3
Rodrigo
Guest
 
Posts: n/a
Thanks George, I'm using the standard k-epsilon model, but tried also with RNG with same results. I am not sure if a follow what you suggests (pick a point and measure levels...), can you tell me how to do it?.

Thanks again,

Rodrigo
  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
Laminar flow and wall roughness junbbung FLUENT 2 November 26, 2022 22:22
Flow pass jet engine kingamer FLUENT 1 July 20, 2011 00:51
Low Mach number Compressible jet flow using LES ankgupta8um OpenFOAM Running, Solving & CFD 7 January 15, 2011 14:38
what the result is negatif pressure at inlet chong chee nan FLUENT 0 December 29, 2001 06:13
fluid flow fundas ram Main CFD Forum 5 June 17, 2000 22:31


All times are GMT -4. The time now is 21:42.