|
[Sponsors] |
May 31, 2003, 22:46 |
phase transforming with heat transfer
|
#1 |
Guest
Posts: n/a
|
i want to simulate the process of liquid water transforming into vaporate water flowing in a hot duct. But i don't know which model i should used. Because all the multiphase models don't considerate the evaporation progress. what should i do?
Any help will be appreciated! Thank you! |
|
June 1, 2003, 09:36 |
Re: phase transforming with heat transfer
|
#2 |
Guest
Posts: n/a
|
Hi!
I think the best possibility is VoF multiphase model with UDF for mass transfer (you have an example for UDF defining mass transfer due to incerased temperature). regards MATEUS |
|
June 1, 2003, 13:43 |
Re: phase transforming with heat transfer
|
#3 |
Guest
Posts: n/a
|
Thank you for your help. But the vof multiphase model just model the two phases which don't penetrate into eath other. The most difficult thing i face is how to considerate the heat transfer between the two phases and the transforming of liquid into gas. i appreciate any help. Thanks again!
|
|
June 2, 2003, 08:12 |
Re: phase transforming with heat transfer
|
#4 |
Guest
Posts: n/a
|
Hi!
If the two phases do not penetrate each other means that there is a defined boundary between them (in your case boiling - liquid and wapour). The case where they are penetrating each other is for example mixture of water and alcohol (no boundary between liquids can be defined). As I told you you can find an example of heat transfer and mass transfer in fluent UDF documentaion. Hm. I forgot to ask you - which fluent wersion are you using - with fluent 6.1 it's possible to do this, but I'm not shure for previous versions. Anyway - check UDF documentation (FLUENT 6.1 - chapter - 4.4.2). REGARDS, AND GOOD LUCK MATEUS |
|
June 2, 2003, 13:52 |
Re: phase transforming with heat transfer
|
#5 |
Guest
Posts: n/a
|
Hi!
I have sent you the documentation - i hope the adress was correct - I've had some problems with it... have fun MATEUS |
|
June 3, 2003, 13:38 |
Re: phase transforming with heat transfer
|
#6 |
Guest
Posts: n/a
|
It's a great help! Thank you very much.
|
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
MRF and Heat transfer calculation | Susan YU | FLUENT | 0 | June 2, 2010 09:46 |
Natural convection - Inlet boundary condition | max91 | CFX | 1 | July 29, 2008 21:28 |
CFX Heat Transfer | RJamison | CFX | 0 | July 24, 2008 13:11 |
VOF model for the two phase heat transfer | Dibakar Rakshit | FLUENT | 2 | April 7, 2008 04:43 |
help needed about phase change | Yanhu Guo | Main CFD Forum | 4 | January 24, 2001 00:16 |