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

particle collisions

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

Reply
 
LinkBack Thread Tools Display Modes
Old   December 13, 2005, 22:00
Default particle collisions
  #1
welch
Guest
 
Posts: n/a
hi,everyone

Particle collision is not covered by the Fluent simulation, but I really hope to simulate it, could anyone tell me how to?
  Reply With Quote

Old   December 13, 2005, 23:14
Default Re: particle collisions
  #2
kev
Guest
 
Posts: n/a
i think it is. check discrete phase model panel and under spray model you can turn on droplet collision. But I also have a question now. It says in fluent manual:

In steady-state discrete phase modeling, particles do not interact with each other and are tracked one at a time in the domain. However, for the spray model, discrete phase droplets interact with each other in collisions, and hence all droplets are tracked together.

So this is confusing. If I use the atomizer model (pressure-swirl) with steady state, do the particles interact??
  Reply With Quote

Old   December 14, 2005, 01:26
Default Re: particle collisions
  #3
welch
Guest
 
Posts: n/a
Yes,i think so. In DPM, the solid particles don't interact with each other, it's apparent,and with the spray model, the droplets could have interactions.So i hope to verify if it's true that the droplets(liquid) could be replaced by the solid particles.if it's affirmed, our problems could be solved.
  Reply With Quote

Old   December 15, 2005, 03:43
Default Re: particle collisions
  #4
farhath
Guest
 
Posts: n/a
Hi, even iam working on a similar project and in the steady state Discrete phase modeling and using surface atomizer.my problem there are no species mass fractions of the fuel(kerosene ) in the injection,iam able to get only oxygen mass fraction . if you know anything about it kindly pass it.. thanks in advance
  Reply With Quote

Old   December 15, 2005, 08:28
Default Re: particle collisions
  #5
Shiju G.Thomas
Guest
 
Posts: n/a
dear farhath,

If the kerosene in ur problem is still in liquid phase fluent wont show its mass fraction.
  Reply With Quote

Old   January 3, 2006, 04:32
Default Discrete phase model
  #6
Prince samson
Guest
 
Posts: n/a
Sir,

I have modeled a dredging hopper in 2D. the model is a rectangular box of dimensions 2m x 0.59m.The inlet is located in the left hand side top corner of the box and the outlet at the right hand side top corner of the box. First in steady state I have studied the flow of pure water from inlet to outlet.

Now I want to study the flow of sand particles in discrete phase model through injection.Please let me known your piece of advice or if possible the procedure.

Thank you

S.Prince samson IIT Madras
  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
Problems involved heat transfer inside a particle and its thermal degradation zhangr STAR-CCM+ 2 August 25, 2011 06:59
Blood Damage Modelling via Particle Tracking in a Centrifugal Heart Pump scatman CFX 5 May 5, 2011 07:23
Particle Tracking for ion Jun CFX 2 August 31, 2010 08:19
DPM UDF particle position using the macro P_POS(p)[i] dm2747 FLUENT 0 April 17, 2009 01:29
Iclude particle diameter effect in wall? yueroo FLUENT 0 April 14, 2001 03:56


All times are GMT -4. The time now is 00:31.