Boiling using VOF

asaleghahreman · May 7, 2010, 07:23

I am using VOF model,for modeling boiling in a horizontal tube,the flow is laminar,and the wall tempreture is 403 kelvin,water is saturated373 kelvin,but it doesnt work properly & doesnt show phase change,& volume fraction of phase 2nd is zero during the process.
I added a source term but it doesnt have good result,what can I do?

tanx alot

Roystan · May 8, 2010, 02:15

You should use UDF to definite the source term！

asaleghahreman · May 8, 2010, 14:32

Hi..
tanx for ur answer.
Would u pls explain more about how use udf for source term?
I marked source term in boundary condition for fluid..

May 7, 2010, 07:23	Boiling using VOF	#1
asaleghahreman New Member asal Join Date: Apr 2010 Posts: 11 Rep Power: 16	I am using VOF model,for modeling boiling in a horizontal tube,the flow is laminar,and the wall tempreture is 403 kelvin,water is saturated373 kelvin,but it doesnt work properly & doesnt show phase change,& volume fraction of phase 2nd is zero during the process. I added a source term but it doesnt have good result,what can I do? tanx alot

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May 8, 2010, 02:15		#2
Roystan New Member Roystan Join Date: May 2010 Location: Where Posts: 3 Rep Power: 16	You should use UDF to definite the source term！

May 8, 2010, 14:32		#3
asaleghahreman New Member asal Join Date: Apr 2010 Posts: 11 Rep Power: 16	Hi.. tanx for ur answer. Would u pls explain more about how use udf for source term? I marked source term in boundary condition for fluid..