how to write a UDF to input temperature at nodes as I.C?

tensun · November 10, 2010, 04:55

Hi guys,

i am new to C programming and is required to write UDF to input temperature at various nodes as Initial boundary conditions.

Assuming that i have all the temperatures at the various nodes, how do i write a UDF so fluent can read it?

Help is much appreciated!

rgds

Allan Walsh · November 10, 2010, 12:35

Not sure if this is the best method, but I have created variables in scheme (rp-var-define.......) as a direct command in Fluent and then converted the scheme variable to a c++ variable in my UDF with a standard macro. Fairly straight forward if you have the UDF manual. Good luck.

robboflea · July 21, 2013, 11:44

Dear Allan,

I'd need to do the same thing as tensun. I am really new to UDFs and I didn't understand exactly what do you mean. Could you please be a bit clearer so that I will at least know where to look in the UDF manual?

Thanks a lot,

Rob

November 10, 2010, 04:55	how to write a UDF to input temperature at nodes as I.C?	#1
tensun New Member ray Join Date: Nov 2010 Posts: 9 Rep Power: 16	Hi guys, i am new to C programming and is required to write UDF to input temperature at various nodes as Initial boundary conditions. Assuming that i have all the temperatures at the various nodes, how do i write a UDF so fluent can read it? Help is much appreciated! rgds

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November 10, 2010, 12:35		#2
Allan Walsh Member Allan Walsh Join Date: Mar 2009 Posts: 56 Rep Power: 17	Not sure if this is the best method, but I have created variables in scheme (rp-var-define.......) as a direct command in Fluent and then converted the scheme variable to a c++ variable in my UDF with a standard macro. Fairly straight forward if you have the UDF manual. Good luck.

July 21, 2013, 11:44		#3
robboflea Senior Member Join Date: Nov 2011 Posts: 109 Rep Power: 15	Dear Allan, I'd need to do the same thing as tensun. I am really new to UDFs and I didn't understand exactly what do you mean. Could you please be a bit clearer so that I will at least know where to look in the UDF manual? Thanks a lot, Rob