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

Particle track

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 28, 2006, 06:04
Default Particle track
  #1
James Bewley
Guest
 
Posts: n/a
Hello

I have been involved in a project to simulate the flow in a hydrocyclone. (using CFX-10)

Part of the project requires me to look at the efficiency.

To do this I have been trying to use the particle track method, to determine the number and size of particles going to ueach outlet, but have been getting some strange results.

All of the particles I put in, very quickly move to the outer wall and exit via the underflow orifice. I reality I would expect the smaller particles to stay close to the center of the cyclone and exit via the overflow orifice.

For background I have been running this using the SSG renyolds stress turbulance model (second moment closure), but only as a steady state.

I was wondering if anyone has some experience of this.

I also read somewhere that particle track could not cope with second moment closer turbulance models, does anyone know if this is the case.

I know this analysis should be run as a transient analysis(time limits have hindered this in the past) but could the fact I and running it as a steady state also cause the particle track to show the strange results.

Many thanks in advance
  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
Particle Track in CFX Jmac CFX 9 July 10, 2014 07:42
DPM UDF particle position using the macro P_POS(p)[i] dm2747 FLUENT 0 April 17, 2009 01:29
Particle Track Domenico FLUENT 2 February 19, 2007 18:56
Particle track files Sankalp CFX 1 August 25, 2004 23:25
Particle track and digit after decimal point Sumon CFX 0 May 15, 2003 22:33


All times are GMT -4. The time now is 07:39.