How to add Variable Wall Temperature Boundary Condition in ANSYS FLUENT ?

atulsbhat · October 28, 2019, 18:24

I want to spatially vary the temperature along the wall (While assigning Boundary Conditions, I Need to add Non Isothermal Boundary Condtion), I mean at every cell , the temperature should vary along the profile (wall).

Thank You

PositronCascade · November 3, 2019, 17:38

You can do that using UDF, there is an example of it in the Fluent UDF User Guide.
If you have ANSYS 2019 R1 or R3, you may use Expressions option of ANSYS Fluent.

LuckyTran · November 3, 2019, 19:08

You can also just make a PROFILE
It's also one of the tutorials

jbo214 · November 4, 2019, 16:49

You can use the following methods to create a spatially (and/or temporally) varying temperature boundary condition. Listed in order of increasing difficulty.

1. Import a profile. Easy to do if you already have appropriate data for temperature in an xyz format.
2. Use an expression. Need to know a little Python but easy to parameterize and deploy. Mildly more work than a profile.
3. Use an UDF. Significantly more difficult.

atulsbhat · November 7, 2019, 08:50

Can You Help Me out with A Sample UDF (JUST THE FORMAT) for Variable Wall Temperature Boundary Conditions?

October 28, 2019, 18:24	How to add Variable Wall Temperature Boundary Condition in ANSYS FLUENT ?	#1
atulsbhat New Member ATUL S B Join Date: Sep 2019 Posts: 7 Rep Power: 7	I want to spatially vary the temperature along the wall (While assigning Boundary Conditions, I Need to add Non Isothermal Boundary Condtion), I mean at every cell , the temperature should vary along the profile (wall). Thank You

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November 3, 2019, 17:38		#2
PositronCascade Member Hasan Celik Join Date: Sep 2016 Posts: 64 Rep Power: 10	You can do that using UDF, there is an example of it in the Fluent UDF User Guide. If you have ANSYS 2019 R1 or R3, you may use Expressions option of ANSYS Fluent.

November 3, 2019, 19:08		#3
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,753 Rep Power: 66	You can also just make a PROFILE It's also one of the tutorials

November 4, 2019, 16:49		#4
jbo214 Member Joshua Join Date: Aug 2014 Posts: 49 Rep Power: 12	You can use the following methods to create a spatially (and/or temporally) varying temperature boundary condition. Listed in order of increasing difficulty. 1. Import a profile. Easy to do if you already have appropriate data for temperature in an xyz format. 2. Use an expression. Need to know a little Python but easy to parameterize and deploy. Mildly more work than a profile. 3. Use an UDF. Significantly more difficult.

November 7, 2019, 08:50		#5
atulsbhat New Member ATUL S B Join Date: Sep 2019 Posts: 7 Rep Power: 7	Can You Help Me out with A Sample UDF (JUST THE FORMAT) for Variable Wall Temperature Boundary Conditions?