UDF for Cross-WLF viscosity model

Azeem160 · October 15, 2021, 04:17

Can anyone please help me to write a udf for cross-wlf viscosity model for fluent.

pakk · October 15, 2021, 13:45

Sure! Show how far you got, where you are stuck, and we can think about how to get further.

Azeem160 · October 18, 2021, 04:39

I have written the expressions that are to be used in the UDF. Please take a look. As I have no background of C++ so I need help how to write the UDF

pakk · October 18, 2021, 12:46

OK, first thing to do: see if you can find a UDF that is similar to your problem. Then you don't have to start from nothing. A good start is the Fluent manual, you should have that on your computer that has fluent.

Look in that manual for a UDF that changes viscosity.

(and forget about c++, the normal language to write in is c, not c++)

diggee · January 28, 2022, 05:35

Quote:

Originally Posted by Azeem160

I have written the expressions that are to be used in the UDF. Please take a look. As I have no background of C++ so I need help how to write the UDF

hi Azeem, were you able to write the UDF then? Apologies for opening an old thread, I am also stuck in the same problem

October 15, 2021, 04:17	UDF for Cross-WLF viscosity model	#1
Azeem160 New Member Azeem Join Date: Nov 2019 Posts: 4 Rep Power: 6	Can anyone please help me to write a udf for cross-wlf viscosity model for fluent.

October 15, 2021, 13:45		#2
pakk Senior Member Join Date: Nov 2013 Posts: 1,965 Rep Power: 26	Sure! Show how far you got, where you are stuck, and we can think about how to get further. __________________ "The UDF library you are trying to load (libudf) is not compiled for parallel use on the current platform" is NOT the error after compiling. It is the error after loading. To see compiler errors, look at your screen after you click "build".

October 18, 2021, 12:46		#4
pakk Senior Member Join Date: Nov 2013 Posts: 1,965 Rep Power: 26	OK, first thing to do: see if you can find a UDF that is similar to your problem. Then you don't have to start from nothing. A good start is the Fluent manual, you should have that on your computer that has fluent. Look in that manual for a UDF that changes viscosity. (and forget about c++, the normal language to write in is c, not c++) __________________ "The UDF library you are trying to load (libudf) is not compiled for parallel use on the current platform" is NOT the error after compiling. It is the error after loading. To see compiler errors, look at your screen after you click "build".

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