CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Rotation flow calculation.

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

LinkBack Thread Tools Display Modes
Old   March 31, 2003, 06:03
Default Rotation flow calculation.
Posts: n/a
I am having trouble with a calculation. The fluid is air. The velocity is max 10m/s and much lower in the plenum. It is a design with a tangential inlet into a plenum chamber. The air is then guided from the plenum to the outlet tube via 3 x 90 turns. It is not at cyclone, but the flow does rotate in the plenum.

A physical model has been made and measurements have been done. And the calculations are not the least comparable to the measurements (axial outlet velocity in segments). The measurements show that the segment axial velocity deviation is approx 3% and the calculation say approx 50%. This is a huge difference.

I use RSM, velocity inlet and pressure outlet.

Can anyone comment on possible errors in setup? I know that it impossible for you to debug my calculation, but if you could come with some general suggestions/thoughts related to rotating flows.

If you need more information regarding the design please let me know, and I will provide them.

Thank you in advance.

  Reply With Quote


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
flow over a cylinder urgent! kevin FLUENT 8 August 11, 2015 13:00
flow number calculation kedarj14 OpenFOAM 0 October 22, 2010 02:45
mass flow rate calculation Ahmed CFX 7 June 20, 2008 05:55
Axissymmetric "laminar flow?" -> Calculation of Cd Rahul Sangole FLUENT 3 January 30, 2006 03:31
computation about flow around a yawed cone Tylor Xie Main CFD Forum 0 June 9, 1999 07:33

All times are GMT -4. The time now is 12:14.