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VOF Boiling

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Old   June 27, 2012, 04:23
Default VOF Boiling
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Hello friends,
As a part f my project, I simulate HTC with Boiling model. I have experiment results and I am gong to validate the experiment using starccm+ 7.0.2. I have a solid domain which is aluminium and fluid domain water-glycol. Solid domain has a constant temperature which is higher than boiling temperature. Boiling model is going to have a liquid phase as water-glycol mixture and gas phase as a water steam.

I use VOF --> Rohsenow Boiling model. I have two doubts regarding my simulation.

1) Liquid Phase Material Properties
Let's say mixture of T_inlet=90 C and T_boiling= 120 C, V_inlet = 1 m/s at 1 atm in the simulation.
Which temperature I am going to use to determine my material poperties of liquid phase?
What should I use for Standard State Temperature value under properties list?
Gas phase material properties are simply because T_boiling (or T_saturation) is going to be used obviously.

2) I searched literature of Rohsenow boiling. I have good guesses for Exponential Prandl number and C_qw parameter. However, I do not know exactly what HTCxArea means and how can I adjust it for my silmulation. Could someone explain a little bit?

Regarding the issues mentioned above, I kindly request some advice from you. Any help would be appreciated.

Kind regards
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boiling, material properties, rohsenow, vof


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