UDF Error

Cla · February 26, 2020, 07:36

Hi everybody!
I'm studying the Wankel Engine in Ansys Fluent and I should generate an eccentric rotor motion. I'm having some problem about UDF.
The error is "The UDF library you are trying to load (libudf) is not compiled for parallel use on the current platform (win64)."
Some ideas or tips?
Thank you very much!

vinerm · February 26, 2020, 07:42

This error means that the UDF has not been compiled. A source code of the UDF needs to be converted into library for use by Fluent. This requires compilation.

loasing · February 29, 2020, 23:24

How to settle it?
Thank you!

vinerm · March 1, 2020, 05:55

Either compile or interpret the UDF before loading. For compiling, you need to click on Build. Do note that a compiler is required for that. Linux machines have gcc, so, nothing special needs to be done. It will work like a charm. For Windows, you need to install either VS, or VC++, or MS Built Tools (SDK) with C++ compiler options. Then, you need to start Fluent from the command prompt belonging to these development environments.

If you UDF is simpler, without any structures, you can use the in-built Interpreter. This does not require anything extra to be installed. However, if UDF has structures, it will not work.

February 26, 2020, 07:36	UDF Error	#1
Cla New Member Claudia Join Date: Feb 2020 Posts: 5 Rep Power: 6	Hi everybody! I'm studying the Wankel Engine in Ansys Fluent and I should generate an eccentric rotor motion. I'm having some problem about UDF. The error is "The UDF library you are trying to load (libudf) is not compiled for parallel use on the current platform (win64)." Some ideas or tips? Thank you very much!

February 26, 2020, 07:42	Compilation	#2
vinerm Senior Member Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 36	This error means that the UDF has not been compiled. A source code of the UDF needs to be converted into library for use by Fluent. This requires compilation. __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.

March 1, 2020, 05:55	Compile or Interpret	#4
vinerm Senior Member Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 36	Either compile or interpret the UDF before loading. For compiling, you need to click on Build. Do note that a compiler is required for that. Linux machines have gcc, so, nothing special needs to be done. It will work like a charm. For Windows, you need to install either VS, or VC++, or MS Built Tools (SDK) with C++ compiler options. Then, you need to start Fluent from the command prompt belonging to these development environments. If you UDF is simpler, without any structures, you can use the in-built Interpreter. This does not require anything extra to be installed. However, if UDF has structures, it will not work. __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.

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February 29, 2020, 23:24		#3
loasing New Member Yu Join Date: Feb 2020 Posts: 1 Rep Power: 0	How to settle it? Thank you!