CFD Online Logo CFD Online URL
Home > Forums > General Forums > Main CFD Forum

Three Phase flow into a reservoir...

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

LinkBack Thread Tools Search this Thread Display Modes
Old   December 15, 2014, 07:01
Default Three Phase flow into a reservoir...
New Member
Join Date: Mar 2014
Posts: 13
Rep Power: 12
akjha is on a distinguished road
1. What will be the primary phase in this three phase model with air water and sand?
2. How important is operating pressure location, Does it affect the simulation?
3. Does viscosity of granular phase matter when I am running an eulerian model?
4. Patching is required or not? If we patch can I patch the whole tank with water phase? Wont it contradict the concept that the continuous phase should be air if it is a primary phase.
5. What will be slip velocity specification for mass flow rate inlet BC? Is it the volume fraction or speed ratio of secondary phase with primary phase or is it between two secondary phases (water and sand)?
6. Equation of continuity is solved for only primary phase or for all phases because there is only one continuity residual appearing in the solution monitor.
7. Right now I am running the model in mixture mode, as suggested at many places in manuals and posts, and I will switch to eulerian after some time. What is the basis behind this?

I tried with primary phase as water (because sand is dispersed in water which is a continuous phase) and the top boundary which is practically open to atmosphere, as wall. Its giving some results but when I patch the pond partially with air it simply diverges. Pressure inlet or outlet at the top face is also not working. Please suggest me
1. what could be the top boundary condition?
2. Should I strictly go for air as primary phase?
3. And if I go for air as primary phase what should be the slip velocity specification in mass flow rate inlet BC, should I put volume fraction of sand and water phases in air?
Please guide me over this asap. If u need some additional info please do ask me.
akjha is offline   Reply With Quote


multiphase flow, primary phase, top boundary condition

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
Two phase flow solid-fluid in river beds Samchak Main CFD Forum 0 May 23, 2013 08:44
Two Phase Darcy flow with gravity -> problem Cyp OpenFOAM Programming & Development 0 November 17, 2010 07:58
two phase flow + ice phase and breaking soeren87 OpenFOAM Running, Solving & CFD 0 September 19, 2010 10:20
Validation for laminar Disperse phase flow shashwat Main CFD Forum 0 April 4, 2008 02:20
low speed compressible two phase flow?? cat CFX 0 November 15, 2005 07:59

All times are GMT -4. The time now is 14:55.