About phase change heat and mass transfer

May 12, 2005, 02:39

I have been working on the heat and mass transfer simulation on the phase change in a mixing chamber for some time. But I cannot finish it. I do not know how to make use of VOF model to simulate such a problem. As in my idea, the VOF model of Fluent can nearly not be suitable for such a problem. The VOF model can not take account of the mass and heat transfer. For example, you see that, in the 'phase interaction' you could only see the 'mass transfer' bar which I think we may add a UDF about the mass transfer, but in 'heat transfer' bar, nothing!

I have nearly given up my hope! Because I can not get enough materials about the Fluent training. Yes, I am in an University and the University had afforded to buy the Fluent sometime ago but the man who is the administrator would not share the registration with us!

Will somebody lend me a hand?

May 12, 2005, 06:52

In Fluent 6.2 you can specify the mass transfer even in the 'phase interaction' panel (it should be a new feature, you could define it via UDF before), but as far as I know you can't customize explicitly a heat transfer between phases in the VOF model, even if you use a UDF...

Good luck

Edi.

maysmech · February 13, 2011, 01:49

Hi,

How is constant rate mass transfer of Fluent?

Is it for all cells or for cells which had both species?

I mean can it be used for vaporous mechanism?

Regards.

May 12, 2005, 02:39	About phase change heat and mass transfer	#1
Michael Guest Posts: n/a	I have been working on the heat and mass transfer simulation on the phase change in a mixing chamber for some time. But I cannot finish it. I do not know how to make use of VOF model to simulate such a problem. As in my idea, the VOF model of Fluent can nearly not be suitable for such a problem. The VOF model can not take account of the mass and heat transfer. For example, you see that, in the 'phase interaction' you could only see the 'mass transfer' bar which I think we may add a UDF about the mass transfer, but in 'heat transfer' bar, nothing! I have nearly given up my hope! Because I can not get enough materials about the Fluent training. Yes, I am in an University and the University had afforded to buy the Fluent sometime ago but the man who is the administrator would not share the registration with us! Will somebody lend me a hand?

May 12, 2005, 06:52	Re: About phase change heat and mass transfer	#2
edi ghirardi Guest Posts: n/a	In Fluent 6.2 you can specify the mass transfer even in the 'phase interaction' panel (it should be a new feature, you could define it via UDF before), but as far as I know you can't customize explicitly a heat transfer between phases in the VOF model, even if you use a UDF... Good luck Edi.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
mass flow in is not equal to mass flow out	saii	CFX	12	March 19, 2018 05:21
Water subcooled boiling	Attesz	CFX	7	January 5, 2013 03:32
Constant velocity of the material	Sas	CFX	15	July 13, 2010 08:56
Convective Heat Transfer - Heat Exchanger	Mark	CFX	6	November 15, 2004 15:55
help needed about phase change	Yanhu Guo	Main CFD Forum	4	January 23, 2001 23:16

February 13, 2011, 01:49		#3
maysmech Senior Member Join Date: Jan 2010 Posts: 347 Blog Entries: 2 Rep Power: 17	Hi, How is constant rate mass transfer of Fluent? Is it for all cells or for cells which had both species? I mean can it be used for vaporous mechanism? Regards.