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-   -   evaporation of liquid water in a horizonal channel (http://www.cfd-online.com/Forums/cfx/23590-evaporation-liquid-water-horizonal-channel.html)

Ahmad Al-Zoubi January 31, 2007 10:55

evaporation of liquid water in a horizonal channel
 
Hi all,

I am trying to simulate the boiling of liquid water in a horizontal channel. Liquid water (at Temp=100 C, 1 atm) enters from one side and leaves completly as vapor due to heat flux at the solid boundaries. Any idea how to simulat this using cfx. How many fluid shall I use (continuse and disperse).

Thanks a lot in advance.

Ahmad Al-Zoubi

rojar February 2, 2007 05:08

Re: evaporation of liquid water in a horizonal cha
 
Try with the cfx ccl for boiling water. It is a template which creates materials, expressions and appropriate multiphase models.

Ahmad Al-Zoubi February 2, 2007 05:55

Re: evaporation of liquid water in a horizonal cha
 
Thanks a lot for your reply Rojar,

The problem which I face is which model to use. Euler Euler, Continuse (Liquid) and disperse (steam)?!. This is not resonable since the liquid water will completly change to steam and here the steam will be the continuse phase.

Another task is which heat transfer coefficient to specify since I have different zones in the channel, i.e., bubble, churn, plug, drop, .....

Also another open question is: if I have a micro channel like a fork, what are the suitable heat transfer coefficents?.

Thanks a lot for any hint

Ahmad


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