UDF compiling problem

elia_l · January 15, 2019, 17:40

Hi guys,
I had this problem with compiling following UDF coming from a famous tutorial coming from CFDninja (about dynamic mesh technics). Could anyone help me with understanding the motivation of this problem?
I ran fluent as standalone mode (out of workbench), 2d mode, double precision and SERIAL as per tutorial instructions.

Check images attached.

1.PNG

2.jpg

3.PNG

4.jpg

Thanks in advance,

ELia

AlexanderZ · January 15, 2019, 21:32

you should recompile UDF using your fluent version.

What version are you using? If it is higher than 19.0, than fluent is running on parallel regime by default (you put single core, but still it will be parallel with 1 host node and 1 computational node)

best regards

elia_l · January 16, 2019, 13:04

Hi Alexander,
I probably fixed the problem. I installed visual studio and now it works.. About mpi, you are right, even I selected serial, when fluent starts, it displays it changes to parallel. Probably it needed some stuff to get compiled the libudf... I still don't know what, cause I'm a beginner, but I'll get in deep with this as soon as possible.
Thanks a lot for the fast reply.

Bye,
Elia

January 15, 2019, 17:40	UDF compiling problem	#1
elia_l New Member Join Date: Oct 2018 Posts: 22 Rep Power: 8	Hi guys, I had this problem with compiling following UDF coming from a famous tutorial coming from CFDninja (about dynamic mesh technics). Could anyone help me with understanding the motivation of this problem? I ran fluent as standalone mode (out of workbench), 2d mode, double precision and SERIAL as per tutorial instructions. Check images attached. 1.PNG 2.jpg 3.PNG 4.jpg Thanks in advance, ELia

January 15, 2019, 21:32		#2
AlexanderZ Senior Member Alexander Join Date: Apr 2013 Posts: 2,363 Rep Power: 34	you should recompile UDF using your fluent version. What version are you using? If it is higher than 19.0, than fluent is running on parallel regime by default (you put single core, but still it will be parallel with 1 host node and 1 computational node) best regards elia_l likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Problem loading UDF in Linux environment	hjan23	FLUENT	0	December 15, 2017 05:09
Problem with DPM simulation with particles injection and EXECUTE_AT_THE_END UDF.	Ari	Fluent UDF and Scheme Programming	4	May 31, 2016 09:51
Problem with compiling UDF in Fluent	amojodi	Fluent UDF and Scheme Programming	4	April 14, 2015 10:01
HELP! Problem compiling UDF function	Syrakus	FLUENT	6	April 7, 2006 11:48
UDF compiling problem for 3D simulation	Marijo	FLUENT	1	March 28, 2006 04:21

January 16, 2019, 13:04		#3
elia_l New Member Join Date: Oct 2018 Posts: 22 Rep Power: 8	Hi Alexander, I probably fixed the problem. I installed visual studio and now it works.. About mpi, you are right, even I selected serial, when fluent starts, it displays it changes to parallel. Probably it needed some stuff to get compiled the libudf... I still don't know what, cause I'm a beginner, but I'll get in deep with this as soon as possible. Thanks a lot for the fast reply. Bye, Elia