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

How to give Buoyancy and drag force for a particle in dpm

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

Like Tree1Likes
  • 1 Post By `e`

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 23, 2016, 09:13
Default How to give Buoyancy and drag force for a particle in dpm
  #1
New Member
 
KcN
Join Date: Apr 2016
Posts: 13
Rep Power: 10
krishna.n is on a distinguished road
hi,
Iam using particle tracking to know how many particles are trapped. for this i have to give buoyancy and drag force for particle. But i cannot find these forces in fluent dpm. can any one tell me where can i activate these forces?

Regards,
Krishna.
krishna.n is offline   Reply With Quote

Old   May 23, 2016, 18:34
Default
  #2
`e`
Senior Member
 
Join Date: Mar 2015
Posts: 892
Rep Power: 18
`e` is on a distinguished road
Buoyancy is affected by the gravity and is included by default when gravity is enabled. The drag force law can be specified in the discrete phase model under injections.
`e` is offline   Reply With Quote

Old   May 24, 2016, 02:16
Default
  #3
New Member
 
KcN
Join Date: Apr 2016
Posts: 13
Rep Power: 10
krishna.n is on a distinguished road
Thank You for the reply.
These are the only forces I can activate in dpm.
Staffman lift force, Virtual mass force,Pressure gradient force. which one to choose?
krishna.n is offline   Reply With Quote

Old   May 24, 2016, 03:31
Default
  #4
`e`
Senior Member
 
Join Date: Mar 2015
Posts: 892
Rep Power: 18
`e` is on a distinguished road
Choose your drag law of the particles in DPM via: Discrete Phase Model > Injections... > injection-0 > Physical Models > Drag Law. Use Stokes-Cunningham for submicron particles, otherwise the spherical drag law (default) is probably appropriate.
wc34071209 likes this.
`e` is offline   Reply With Quote

Reply

Tags
buoyancy force, dpm fluent, particle tracking

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
particles leave domain Steffen595 CFX 9 March 7, 2016 17:19
how to calculate the drag force on a 3D sphere in OF? keepfit OpenFOAM 2 May 6, 2015 13:04
buoyancy lift & Buoyancy drag on a moving paddle hhh OpenFOAM 0 July 16, 2013 02:50
forced to sticking of soot particle kmgraju CFX 0 November 27, 2012 10:08
Force by buoyancy champshof CFX 4 November 18, 2009 04:07


All times are GMT -4. The time now is 14:34.