A question about horizontal film boiling tutorial?

July 7, 2007, 05:00

Hi all;

has someone read this tutorial : Horizontal film boiling

I have a imporatant question . Why should I set a source term for VOF of primary phase (gas)using UDF? We know VOF for primary phase is calculated due to this relation : VOF of primary phase = 1- VOF of secondary phase ;

therefore What we really need is that we solve VOF equation only for secondary phase with regarding to its source term and then gain VOF for primary phase using the upper relation. Isn't it ?

I am appreciated everybody help me in this case.

Thankx a lot.

omid_h · November 24, 2009, 02:12

Quote:

Originally Posted by Asghari
;143235

Hi all;

has someone read this tutorial : Horizontal film boiling

I have a imporatant question . Why should I set a source term for VOF of primary phase (gas)using UDF? We know VOF for primary phase is calculated due to this relation : VOF of primary phase = 1- VOF of secondary phase ;

therefore What we really need is that we solve VOF equation only for secondary phase with regarding to its source term and then gain VOF for primary phase using the upper relation. Isn't it ?

I am appreciated everybody help me in this case.

Thankx a lot.

Hi Mr.asghari

can you please send me this tutorial or any other documents or UDF ralated too boiling phenomena?
my email is oh1364@yahoo.com

new-jaguar · April 13, 2013, 05:33

Hi, all. I'm looking for the tutorial 'horizontal film boiling'. I don't have fluentuser.com ID.

If any have tutorial and mesh file and c.file can you send me saeed0913@yahoo.com

Thanks in advance

king1370 · September 23, 2016, 13:18

i am simulating film boiling a round cylinder with VOF method in ansys fluent. even I succeed simulate film boiling for two fluid with near densities. but when i impose water vapor and water liquid properties the the film vapor around the cylinder break and some piece of vapor move to upward and vapor film disappear. someone say i should change my pressure reference location. but i did this too and it didn't result. can anyone help me?

July 7, 2007, 05:00	A question about horizontal film boiling tutorial?	#1
Asghari Guest Posts: n/a	Hi all; has someone read this tutorial : Horizontal film boiling I have a imporatant question . Why should I set a source term for VOF of primary phase (gas)using UDF? We know VOF for primary phase is calculated due to this relation : VOF of primary phase = 1- VOF of secondary phase ; therefore What we really need is that we solve VOF equation only for secondary phase with regarding to its source term and then gain VOF for primary phase using the upper relation. Isn't it ? I am appreciated everybody help me in this case. Thankx a lot.

April 13, 2013, 05:33	horizontal film boiling	#3
new-jaguar New Member saeed Join Date: Apr 2013 Posts: 10 Rep Power: 13	Hi, all. I'm looking for the tutorial 'horizontal film boiling'. I don't have fluentuser.com ID. If any have tutorial and mesh file and c.file can you send me saeed0913@yahoo.com Thanks in advance

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king1370 New Member amir Join Date: Sep 2016 Posts: 2 Rep Power: 0	i am simulating film boiling a round cylinder with VOF method in ansys fluent. even I succeed simulate film boiling for two fluid with near densities. but when i impose water vapor and water liquid properties the the film vapor around the cylinder break and some piece of vapor move to upward and vapor film disappear. someone say i should change my pressure reference location. but i did this too and it didn't result. can anyone help me?