CFD Online Logo CFD Online URL
Home > Forums > CFX

How to model the solid-fluid phase change in CFX

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

LinkBack Thread Tools Display Modes
Old   May 2, 2006, 12:45
Default How to model the solid-fluid phase change in CFX
Posts: n/a
Can you give me a general idea, how to model a solid-fluid phase change in CFX?

My problem is, I have a solid domain and a gas domain. I want to model the solid to gas phase change. If I create an interface between those two domains, I found, I can't specify the interface temperature, which is a material property and must be set.

In CFX help file, there are 4 descriptions mentioning the melting. But they didn't give an example. When I try to define an interphase mass change in a multiphase flow, I meet the problem that I can't select a solid-fluid domain. The domain must be eigher pure solid or pure fluid (liquid and gas).

Can anybody tell me what should I do now?

Thank you very much!


  Reply With Quote

Old   May 25, 2006, 05:54
Default Re: How to model the solid-fluid phase change in C
Posts: n/a
Friend, Even I need the same hind of help to madel a phase change solid - liquid either in fluent or CFX. If you get any information please forward me. Thank you
  Reply With Quote

Old   May 26, 2006, 06:27
Default Re: How to model the solid-fluid phase change in C
Posts: n/a
I tried to build up the energy balance at the fluid-solid interface. However, it seems CFX can't read the wall heat flux at that area. Therefore I wrote a user Fortran routine to describe the conduction flux (perhaps later also the radiation flux) at the inteface. Then use the surface energy source term to control the interface surface temperature to the phase change temperature. Later I decide the phase change mass according to the surface energy source. This is only an idea. It is still not successful. Please give me your opnion on that.

  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
RPM in Wind Turbine Pankaj CFX 9 November 23, 2009 05:05
CFX doesn't continue calculation... mactech001 CFX 6 November 15, 2009 22:25
about compresive phase James CFX 10 September 12, 2006 03:16
Phase Change Model rahmat, MEng Main CFD Forum 0 June 11, 2002 13:52
UDF Scalar Code: HT 1 Greg Perkins FLUENT 8 October 20, 2000 12:40

All times are GMT -4. The time now is 11:43.