What's hf in transportProperties

Yupp · July 4, 2022, 04:42

Hello foamers.

I'm using a multiphase solver (interCondensatingEvaporatingFoam). In the transport properties, both gas and liquid have "hf" to be defined.

I searched in the documentation, but only found "Hf" which corresponds to the heat of fusion. I was pretty sure "hf" wasn't "Hf". I tried changing hf in Hf and the simulation crashed, so I'm now sure that it's not the heat of fusion.

I thought it might be the specific enthalpy, but couldn't find anything sure about it.

Anyone have the answer?

TommyLW · October 31, 2022, 06:50

Hello, I don't know if you have already solved this problem.
But since that there is no solution posted, I decide to reply.

The hf means latent heat with unit[J/kg] in interCondensatingEvaporatingFoam cases.
If you want to set latent heat of evaporation to 2256kJ/kg, you can just leave the hf of liquid as 0, and set the value of hf of vapour as 2256e3.

Another forum page related to this issue:
Mass transfer model in interCondensatingEvaporatingFoam

Hope this can help you or others who has the same question.

July 4, 2022, 04:42	What's hf in transportProperties	#1
Yupp New Member Join Date: Jun 2022 Posts: 7 Rep Power: 4	Hello foamers. I'm using a multiphase solver (interCondensatingEvaporatingFoam). In the transport properties, both gas and liquid have "hf" to be defined. I searched in the documentation, but only found "Hf" which corresponds to the heat of fusion. I was pretty sure "hf" wasn't "Hf". I tried changing hf in Hf and the simulation crashed, so I'm now sure that it's not the heat of fusion. I thought it might be the specific enthalpy, but couldn't find anything sure about it. Anyone have the answer?

October 31, 2022, 06:50		#2
TommyLW New Member Jinghan WANG Join Date: Mar 2022 Posts: 2 Rep Power: 0	Hello, I don't know if you have already solved this problem. But since that there is no solution posted, I decide to reply. The hf means latent heat with unit[J/kg] in interCondensatingEvaporatingFoam cases. If you want to set latent heat of evaporation to 2256kJ/kg, you can just leave the hf of liquid as 0, and set the value of hf of vapour as 2256e3. Another forum page related to this issue: Mass transfer model in interCondensatingEvaporatingFoam Hope this can help you or others who has the same question. souza.emer and Yupp like this.

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