|
[Sponsors] |
October 29, 2002, 09:05 |
Boundary codition for multiphase
|
#1 |
Guest
Posts: n/a
|
Hi everybody I'm trying to simulate a two phase flow. The problem is condensation of a turbulent annular film of R-22 vapor in a tube. I've used Fluent 5.23 to solve the problem but I haven't known how to enter some boundary conditions. The VOF two multiphase model has used for simulating the case. The turbulent model is standard k-epsilon .The coordinate system is cylindrical. At flow inlet, the velocity of vapor core is different from velocity of liquid film. The boundary condition is: U = Uin,v if 0 < r < R - d U = Uin,l if R - d < r < R "d" is liquid film thickness. At flow outlet I have to enter (dk/dz) =0 and (d epsilon/dz) =0. Please help me in this regard. Your kind attention and your prompt reply would be highly appreciated. Yours Faithfully Nima Sheyad
|
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
mass flow in is not equal to mass flow out | saii | CFX | 12 | March 19, 2018 05:21 |
CFX doesn't continue calculation... | mactech001 | CFX | 6 | November 15, 2009 21:25 |
Concentric tube heat exchanger (Air-Water) | Young | CFX | 5 | October 6, 2008 23:17 |
Boundary conditions? | Tom | Main CFD Forum | 0 | November 5, 2002 01:54 |
Boundary Conditions | Jan Ramboer | Main CFD Forum | 11 | August 16, 1999 08:59 |