CFD Online Logo CFD Online URL
Home > Forums > FLOW-3D

Two Fluids Flow

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

LinkBack Thread Tools Display Modes
Old   August 8, 2011, 02:23
Default Two Fluids Flow
New Member
yaser geraili
Join Date: Feb 2011
Posts: 5
Rep Power: 8
Y_G is on a distinguished road
Hi everybody
I'm trying to model a flip-bucket with two fluids (air and water). simulation solves the flow on chute but when the flow reaches to the lip of the flip-bucket, simulation can not solve the pressure (pressure iteration did not converge at ITMAX). I've totally tried lot's of conditions for example VOF method, different mesh size, turbulence model, number of iteration, time step, but didn't work. does anybody have an Idea?
Y_G is offline   Reply With Quote

Old   September 19, 2011, 05:40
New Member
Niraj Shah
Join Date: Nov 2010
Posts: 3
Rep Power: 9
nirajshah85 is on a distinguished road
Hello Yaser,
I think you can model a Flip-bucket with one fluid free surface flow in F3D. You can use the air entrainment model alongwith the simulation to check on the air entrained in the water.

If for the simulation you believe that there is a large amount of air entrainment to have density change then you can also activate the density model and in case if you are also modelling the downstream area then you can also have the drift flux model activated to allow the trapped/entrained air to escape to the surface.
nirajshah85 is offline   Reply With Quote

Old   November 13, 2012, 08:35
New Member
Mahdiar Farhoudi
Join Date: Feb 2012
Location: Tehran, Iran
Posts: 17
Rep Power: 7
mf_emp is on a distinguished road
Hi, did you find what was the problem??
I had this problem too!
I also tried density evaluation and drift flux model but no correct answers!!
I'm working on U-shaped spillway.
mf_emp is offline   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
Compressible flow, no data at the outlet mireis FLUENT 6 September 3, 2015 02:10
mixinf fluids in solidworks flow simulation 2011 robantwerpen Main CFD Forum 0 January 6, 2011 04:53
Natural convection - Inlet boundary condition max91 CFX 1 July 29, 2008 20:28
Mass flow and U-Mom flow in CFX Zhihua Xie CFX 0 September 3, 2007 09:49
transform navier-stokes eq. to euler-eq. pxyz Main CFD Forum 37 July 7, 2006 08:42

All times are GMT -4. The time now is 02:06.