question about "heat of vaporization" in liquid.dat

Rannnnnnnn · March 14, 2022, 05:52

Hi everyone,

I`m using a new kind of fuel in simulation that the physical properties does not exist in predefined liquids. I want to get the heat of vaporization experimently. I need to know what is the pressure in heat of vaporization defintion used in CONVERGE. It seems like the pressure is not 1 atm because the heat of vaporization of water isn`s zero after 373K.

Hope someone can help me, thanks!

Kind regards

ksrivast · March 14, 2022, 16:49

Hello Haoran,

Heat of vaporization is a temperature dependent property. If you consider the Clausius–Clapeyron relation, then it is related to the temperature and the vapor pressure at that temperature. Latter of which is also included in liquid.dat.

Sincerely,

March 14, 2022, 05:52	question about "heat of vaporization" in liquid.dat	#1
Rannnnnnnn New Member HAORAN LI Join Date: Mar 2020 Posts: 6 Rep Power: 6	Hi everyone, I`m using a new kind of fuel in simulation that the physical properties does not exist in predefined liquids. I want to get the heat of vaporization experimently. I need to know what is the pressure in heat of vaporization defintion used in CONVERGE. It seems like the pressure is not 1 atm because the heat of vaporization of water isn`s zero after 373K. Hope someone can help me, thanks! Kind regards

March 14, 2022, 16:49		#2
ksrivast Senior Member Kislaya Srivastava Join Date: Sep 2017 Location: Convergent Science, Northville MI Posts: 165 Rep Power: 8	Hello Haoran, Heat of vaporization is a temperature dependent property. If you consider the Clausius–Clapeyron relation, then it is related to the temperature and the vapor pressure at that temperature. Latter of which is also included in liquid.dat. Sincerely, __________________ Kislaya Srivastava Principal Research Engineer \| Applications CONVERGECFD

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