Fluent doesn't operate when inputting UDF !!

orchiders · July 7, 2014, 04:39

Hi. All fluent users !!

I'm studying boiling phenomena.
And I use VOF model in fluent.

I wrote UDF about it. but it didnt work.

My UDF has C_UDMI macro. So I assign memoris using User-Defined Memory.

I don't know how this error happened.

I attach my UDF files and equation.

GM_XIII · July 11, 2014, 11:22

Tell us more about the error it gives you, are you preallocating the UDM?

danieldmgy · July 11, 2014, 23:10

It could be either the way you handling the UDF is wrong or your algorithm is not correct (I'm not familiar with boiling mechanism). I think you need to guarantee you handling the UDM correctly then moving to specific algorithm. I personally spend around 25% time just to make sure I am using UDF correctly.

orchiders · July 13, 2014, 21:38

I'm a beginner having less than 3 month of experiences. I first used UDF. So I didn't understand this error.

I think your advise is right. so I'm fixging UDF.

I'm so sorry but Could you send the file by e-mail.

Please.

My e-mail is orchiders@nate.com

pakk · July 14, 2014, 16:48

Quote:

Originally Posted by orchiders

I'm a beginner having less than 3 month of experiences. I first used UDF. So I didn't understand this error.

Which error?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Wind turbine rotation through UDF in FLUENT	Shamoon Jamshed	Fluent UDF and Scheme Programming	10	June 25, 2018 12:58
fluent udf, saving data in udf	mohsen zendehbad	Fluent UDF and Scheme Programming	15	June 13, 2017 23:23
Making wave udf in fluent	sunggun1212	Fluent UDF and Scheme Programming	7	October 27, 2015 10:52
DEFINE_DIFFUSIVITY udf in fluent	maniek940	Fluent UDF and Scheme Programming	2	August 13, 2013 17:13
UDF problem caused by various version of Fluent	Yurong	FLUENT	3	January 15, 2006 10:57

July 11, 2014, 11:22		#2
GM_XIII Member David Join Date: Aug 2012 Posts: 48 Rep Power: 13	Tell us more about the error it gives you, are you preallocating the UDM?

July 11, 2014, 23:10		#3
danieldmgy New Member Chuang Wei Join Date: Aug 2012 Posts: 8 Rep Power: 13	It could be either the way you handling the UDF is wrong or your algorithm is not correct (I'm not familiar with boiling mechanism). I think you need to guarantee you handling the UDM correctly then moving to specific algorithm. I personally spend around 25% time just to make sure I am using UDF correctly.

July 13, 2014, 21:38		#4
orchiders New Member JeongGyun Ham Join Date: Mar 2014 Location: Korea Posts: 12 Rep Power: 12	I'm a beginner having less than 3 month of experiences. I first used UDF. So I didn't understand this error. I think your advise is right. so I'm fixging UDF. I'm so sorry but Could you send the file by e-mail. Please. My e-mail is orchiders@nate.com