CFD Online Logo CFD Online URL
Home > Forums > ANSYS

Laminar Solid-Liquid (Two-phase flows) flows in CFX

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

LinkBack Thread Tools Display Modes
Old   April 8, 2010, 16:59
Default Laminar Solid-Liquid (Two-phase flows) flows in CFX
Freeman Adane
Join Date: Apr 2010
Posts: 42
Rep Power: 7
freemankofi is on a distinguished road
I am using CFX v12.1 to solve two-phase flows in a horizontal pipe. Both the continuous (liquid: density = 867 kg/m3) and dispersed (solid: sand with density 2650 kg/m3 and d32=0.43mm) are model as laminar.

Convergence is not my problem, however, the volume fraction (VF) results doesn't agreed with the published experimental data. The experimental data indicates that the sand settled and almost stratified flow. The delivered concentration was less 50% of the inlet VF. CFX indicates that there is an effective transport of the sand with almost 100% delivered concentration.

Since the VF or concentration profile is "wrong", I don't trust the velocity profile it is giving me, despite the pressure gradient is somehow closed to the experimental data.

I am not sure if it's coming from liquid-solid interaction model (kinetic theory), since it's is based on turbulent flows. should turbulent or laminar really matter for this model?

Any help on this will be much appreciated. Thanks.
freemankofi 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
[GAMBIT] help( solid and liquid mixing) sanaz ANSYS Meshing & Geometry 6 October 15, 2009 10:25
More Probs - Gas-Solid 2 Phase flow Paresh Jain CFX 4 March 27, 2004 18:10
How to Model Three Phase Clay Slurry in CFX 5.5 J.Yang CFX 2 August 28, 2002 12:06
Molecular weight of the solid phase? imburse CFX 3 May 9, 2002 18:28
UDF Scalar Code: HT 1 Greg Perkins FLUENT 8 October 20, 2000 12:40

All times are GMT -4. The time now is 07:47.