UDF for changing the type of boundary condition

sandeep_tu · March 18, 2011, 09:34

Dear Users,

Actually I am trying to do some analysis of a moving bus. I want to define the doors as WALL boundary condition for some time (iterations) and then to OPENING or OUTLET boundary condition and again to WALL (as opening and closing doors) for some flow time.

Could anyone help me how can I define the UDF for this type of problem.

regards

Amir · March 18, 2011, 09:40

Hi,
you can do that with a simple journal file. I didn't see a UDF for that before!

sandeep_tu · March 18, 2011, 10:09

First of all thanks for the reply. I have no idea about creating journal file, do you know where can I find any material or any kind of tutorial regarding this (creation of journal file).

thanks

Amir · March 18, 2011, 13:15

Quote:

Originally Posted by sandeep_tu

First of all thanks for the reply. I have no idea about creating journal file, do you know where can I find any material or any kind of tutorial regarding this (creation of journal file).

thanks

refer to FLUENT user guide,<creating and reading journal files>.
you can automate FLUENT commands with journal files and they can be contained of TUI commands.
e.g: set a specific B.C. up to iteration (100) and then change to another...

March 18, 2011, 09:34	UDF for changing the type of boundary condition	#1
sandeep_tu Member Sandeep Join Date: Apr 2009 Location: Munich, Germany Posts: 30 Rep Power: 17	Dear Users, Actually I am trying to do some analysis of a moving bus. I want to define the doors as WALL boundary condition for some time (iterations) and then to OPENING or OUTLET boundary condition and again to WALL (as opening and closing doors) for some flow time. Could anyone help me how can I define the UDF for this type of problem. regards

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March 18, 2011, 09:40		#2
Amir Senior Member Amir Join Date: May 2009 Location: Montreal, QC Posts: 735 Blog Entries: 1 Rep Power: 22	Hi, you can do that with a simple journal file. I didn't see a UDF for that before!

March 18, 2011, 10:09		#3
sandeep_tu Member Sandeep Join Date: Apr 2009 Location: Munich, Germany Posts: 30 Rep Power: 17	First of all thanks for the reply. I have no idea about creating journal file, do you know where can I find any material or any kind of tutorial regarding this (creation of journal file). thanks