CFD Online Logo CFD Online URL
Home > Forums > FLUENT

momentum exchange of coupled DPM!!

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

LinkBack Thread Tools Display Modes
Old   May 15, 2003, 22:12
Default momentum exchange of coupled DPM!!
Posts: n/a

I have some questions about the momentum exchange calculations in coupled DPM.

The exchange is calculated via the equation:

F=(drag_force+other force)*mass_flow*time_step

Can you tell me if I have four injections each with a definite mass-flow rate, how does the fluent calculate this exchange value when I use following methods:

(1) a steady calculation with only four particles tracked ;

(2) an unsteady calculation with both injection start time and stop time set to zero(that is to say, during the calculation, there are only four particles in the field);

(3) an unsteady calculation with a difference between start time and stop time(that is to say, during each iteration time step, there will be other four paricles injected into the field and the particles in the field are accumulated);

Any help will be appreciated!!


  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
coupled DPM Peter Kolb FLUENT 5 October 4, 2012 10:27
Derivation of Momentum Equation in Integral Form Demonwolf Main CFD Forum 2 October 29, 2009 20:53
DPM Coupled Implicit Aimara FLUENT 0 April 25, 2007 16:23
problem on DPM coupled with CFD harry Main CFD Forum 0 June 2, 2005 06:12
FEM fortran codes for coupled mass momentum energy Amit Main CFD Forum 1 May 17, 2005 20:38

All times are GMT -4. The time now is 14:38.