Hello, I have two udf files to define my boundary conditions of my domain. But when i try to interprete my two funtions, fluent doesnt allowed me to interprete both, when i try with the second, the fist is deleted.

Thats why i decided to compile my two files, but fluent says me when i load: Opening library "libudf"... Error: open_udf_library: El sistema no puede hallar el archivo especificado. (the sistem couldnt find the select file) Error Object: ()

Im using the header file udfconfig.h is this correct? fluent then buid the shared folder and when i try to load it the error appear.

Thanks if anyone can help me.!

you could try to have both your UDF's in a single file and interpret that file. To work with compild UDF follow the following steps.

You need to follow the following steps 1) set up the environmental variable This is done by going to the start menu > Programs>Fluent> Set_environment clicking this would set the path and variable. 2) set up a directory structure as follows create a dir libudf in that create "src" and "ntx86". In ntx86 create "3d".( am asuming that ur simulation is 3d) 3) copy the udf (.C file) and the required header( u can get the header files frm c:\FLUENT.INC\fluent6.*.*\ntx86\src) files into the "src" folder. 4) go to c:\FLUENT.INC\fluent6.*.*\ntx86\3d copy the contents into the 3d folder which you created. 5) go to c:\FLUENT.INC\fluent6.*.*\ntx86\src copy makefile_nt.udf and user_nt.udf to your 3d folder 6) rename makefile_nt.edf to makefile and open user_nt.udf and read the instructions and do accordingly. 7) close FLUENT . Open command prompt ( start > accessories > command prompt ) type the following C:\ CD program Files \ microsoft visual studio .net\vc7\bin 8) type :- vcvars32 9)go to the libudf\ntx86\3d which u have created 10) type nmake 11) This will compile ur code and build a lib if u dont have any errors , if errors are present it will say so u need to debug it then. 12) once this is done u can open fluent again and load the lib u have just created , in this case it would be libudf.