CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT > Fluent Multiphase

Body force in Multiphase flow

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

LinkBack Thread Tools Search this Thread Display Modes
Old   March 20, 2020, 23:24
Default Body force in Multiphase flow
New Member
Mohamed Wael
Join Date: Oct 2019
Posts: 6
Rep Power: 6
Mwbadawy is on a distinguished road
In multiphase flow simulations, is it possible to add body force that act on a specific phase and not the other. If this is possible, are there any easy resources to do this as I am new to the CFD world.
Mwbadawy is offline   Reply With Quote

Old   March 21, 2020, 06:51
Default Multiphase Model Dependent
Senior Member
vinerm's Avatar
Join Date: Jun 2009
Location: Nederland
Posts: 2,946
Blog Entries: 1
Rep Power: 35
vinerm will become famous soon enough
Applying a source depends on the multiphase model being used. It is doable for all models, however, if it is Euler-Euler model, then it is straightforward since all phases have their own momentum equations. You can just go to cell zone conditions, select the phase that is affected by the body force, and then apply the source. However, if it is Mixture or VOF, then you have to do a little more work since there is a single set of N-S equations. If you apply source term, it gets applied throughout all the phases. So, a simpler solution is to apply the source term as a product of source term and volume fraction of the phase that should have body force applied. In that case, body force will automatically become zero when the volume fraction of affected phase is 0. However, do note that the effects of body force will still be transmitted across all phases in all models due to interfacial exchange terms.

PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.
vinerm is offline   Reply With Quote


ansys, body force, fluent, multiphase flow, udf

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
ActuatorDiskExplicitForce in OF2.1. Help be_inspired OpenFOAM Programming & Development 10 September 14, 2018 12:12
Multiphase flow - incorrect velocity on inlet Mike_Tom CFX 6 September 29, 2016 02:27
force convergence problems in CFX 6DOF rigid body solver ajay_ks CFX 8 March 25, 2013 05:02
Convergence Problem with body force driven flow Jinfeng FLUENT 1 December 9, 2009 04:54
Two-phase air water flow problems by activating Wall Lubrication Force challenger85 CFX 5 November 5, 2009 06:44

All times are GMT -4. The time now is 01:37.