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enthalpy formulation for phase change

Posted 28 mars 2011, 00:35 UTC−4 Heat Transfer & Phase Change Version 4.0a 1 Reply

JiYoung Park
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I solved

dh/dt=d/dx(alpha*dh/dx)-rho*latentheat*d(liquidfraction)/dt.



I took

partial differentiation operator : pd(fl(T),t)

into the source term "rho*latentheat*d(liquidfraction)/dt"

But I couldn't find any difference with source term=0.

fl(T) was T dependent variable : '1*(T>Tref)'


plz help ~

thank you
1 Reply Last Post 25 oct. 2011, 18:45 UTC−4
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Hello JiYoung Park

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Carlos Alirio Diaz Gonzalez
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Posted: 1 decade ago 25 oct. 2011, 18:45 UTC−4
Hi.

Did you solve your problem with the phase change?

I have a big trouble with this.....in a concentric tube heat exchanger where steam becomes liquid and i don´t know how to model this situation. help me plz

Thanks
Hi. Did you solve your problem with the phase change? I have a big trouble with this.....in a concentric tube heat exchanger where steam becomes liquid and i don´t know how to model this situation. help me plz Thanks

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