Film boiling in VOF multiphase model

rupak504 · April 17, 2020, 17:10

hello,

I am simulating film boiling. For that, I am referring a paper boil.jpg as you see in the figure, we have two equations that need to be inserted using UDF in VOF multiphase model. I understand the second equation, and I have already written UDF for that, but I don't understand how to include the first equation.

Any help would be highly appreciated

regards

vinerm · April 18, 2020, 16:02

I suppose you are stuck due to the dot product. You need to fetch gradients of temperature and volume fraction using C_T_G and C_VOF_G and then calculate their dot product.

April 17, 2020, 17:10	Film boiling in VOF multiphase model	#1
rupak504 Senior Member Lolita Join Date: Aug 2016 Posts: 115 Rep Power: 9	hello, I am simulating film boiling. For that, I am referring a paper boil.jpg as you see in the figure, we have two equations that need to be inserted using UDF in VOF multiphase model. I understand the second equation, and I have already written UDF for that, but I don't understand how to include the first equation. Any help would be highly appreciated regards

April 18, 2020, 16:02	Gradients	#2
vinerm Senior Member Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 35	I suppose you are stuck due to the dot product. You need to fetch gradients of temperature and volume fraction using C_T_G and C_VOF_G and then calculate their dot product. __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.

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