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-   -   Cross Flow cooling system involving multiple fluids and a solid domain (http://www.cfd-online.com/Forums/cfx/77177-cross-flow-cooling-system-involving-multiple-fluids-solid-domain.html)

ajaymenon June 15, 2010 23:09

Cross Flow cooling system involving multiple fluids and a solid domain
 
Hello,

I am trying to perform a conjugate heat transfer analysis of a simple cross flow cooling system consisting of a single pipe carrying hot fluid.This pipe-fluid system is cooled by forced convection by air flowing over the pipe. I have gone through the tutorial on CHT of heating coil , but it contains a single fluid domain and a single solid domain. How can I model a CHT transfer such as the one that I described where 2 fluids seperated by a solid domain is involved?

Do I need to perform a multiphase analysis here, because CFX just allows me to define one fluid model for both fluid domains or is there a way I can specify seperate fluid models for the 2 fluid domains in my problem?

Any help in modelling this problem is appreciated?

Thank You
Ajay

ghorrocks June 16, 2010 08:21

This can be done without requiring multiphase. You have to use the "disallow constant domain physics" option or something like that - search the forum for it, there are a few posts on it.

ajaymenon June 16, 2010 17:09

Thank You Glenn

aliemadi March 8, 2012 04:05

Dear Ajay
I have exactly the same problem in modelling a heating device. have your problem solved?
I searched the forum for "disallow constant domain physics" but nothing exist.
Thanks
Ali

ghorrocks March 8, 2012 18:00

http://www.cfd-online.com/Forums/cfx...nt-fluids.html


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