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

Boiling with moving boundary

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

LinkBack Thread Tools Display Modes
Old   June 12, 2011, 21:25
Default Boiling with moving boundary
New Member
Join Date: Jan 2011
Posts: 7
Rep Power: 8
Ghalebsater is on a distinguished road
Hello there,

I want to simulate liquid boiling in a closed with a moving top wall. I would appreciate any help or suggestions for the following problems I encountered.

1) My mixture model for boiling is showing full evaporation but the pressure inside the container is too small and it seems not increasing? any ideas why? (I have used the mixuture model tutorial with the given UDF).

2) I am not sure how to model the moving top wall due to the liquid evaporating (increase in pressure) or vapor condensing (decrease in pressure) ? any help or materials that might help me to model it. I looked in most of the tutorial couldnot find anything simmilar.

THank you.
Ghaleb Sater
Ghalebsater is offline   Reply With Quote

Old   June 16, 2011, 13:33
New Member
Join Date: Jan 2011
Posts: 7
Rep Power: 8
Ghalebsater is on a distinguished road

I was able to fix the low pressure; it is simply by selecting ideal-gas for water vapor density.
Ghalebsater 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
Water subcooled boiling Attesz CFX 7 January 5, 2013 04:32
moving boundary / mesh John Main CFD Forum 1 May 8, 2008 10:28
solidification/melting model - moving boundary Thomas Bauer FLUENT 2 July 6, 2006 01:42
Moving boundary Issue Andy FLUENT 0 August 11, 2005 18:21
moving boundary arun Main CFD Forum 0 July 4, 2002 07:22

All times are GMT -4. The time now is 08:32.