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

relative velocity of particles in DPM

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 25, 2003, 04:45
Default relative velocity of particles in DPM
  #1
kulwinder
Guest
 
Posts: n/a
Is there a way to to calculate relative velocity of the particles with respect to fluid,in the DPM model? or how does fluent6 calculates particle reynolds number?

Appreciating all suggestions and help. kulwinder
  Reply With Quote

Old   May 25, 2003, 17:13
Default Re: relative velocity of particles in DPM
  #2
Alex Munoz
Guest
 
Posts: n/a
Hi

Good question!

of course you can obtain this value, I don't know if there is already a macro implemented but you can write a UDF. See the example for define DPM scalar update.

Best regards

Alex Munoz
  Reply With Quote

Old   May 25, 2003, 20:21
Default Re: relative velocity of particles in DPM
  #3
kulwinder
Guest
 
Posts: n/a
hi alex,

Thanks for your fast and helping response. I need relative velocity at the particle position,and i have access to the fluid velocity at the nodes and cell centroid ,but then i have to interpolate this velocity to the particle position. Interpolation wil make my code long and my fluent run slow.

But I have found one macro DEFINE_DPM_DRAG where fluent passes particle Reynolds number to the macro, I will try manupulating this opportunity to my use.

Once again I appreciate your help.

Best Regards

kulwinder
  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
Calculating Relative Velocity of a Bubble SMM STAR-CD 3 August 29, 2011 12:38
Changing the acceleration of DPM particles?? Wikie Fluent UDF and Scheme Programming 2 April 27, 2010 05:41
How to define a parabolic velocity inlet of particles with UDF zumaqiong FLUENT 2 February 22, 2010 10:46
Dispersed Solid particles in carrier gas (DPM) Frederik FLUENT 1 June 3, 2008 06:13
relative velocity vectors carno FLUENT 0 May 9, 2008 07:59


All times are GMT -4. The time now is 05:12.