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How to use user defined Subroutine

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Old   November 11, 2000, 03:35
Default How to use user defined Subroutine
  #1
Ning Yang
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I want to know how to use "user defined Subroutines" in fluent. Can I program my codes in the surface of Fluent directly?
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Old   November 12, 2000, 05:17
Default Re: How to use user defined Subroutine
  #2
Harry
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if you understand programming in C, it's possible. for a better look, please try this website

for Dos/Windows: www.perkins-software.com.au/Fluent/udf_scalar_dos.c for Unix: www.perkins-software.com.au/Fluent/udf_scalar_unix.c

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Old   November 13, 2000, 04:14
Default Re: How to use user defined Subroutine
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Rüdiger Schwarze
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No, check the manuals, there's an overview on how tu use udf's in the solver.
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Old   November 13, 2000, 08:04
Default Re: How to use user defined Subroutine
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yang
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Thanks for your answer on fluent forum. I am using fluent4.5 now while I can only find the simple explaination about "user defined subroutine" in Chapter20 "fluent user's guide". I want to know more information about the structure of subroutine and how to connect it with fluent.
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Old   November 13, 2000, 08:16
Default Re: How to use user defined Subroutine
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Rüdiger Schwarze
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You should check the files "uds_..._flu45.pdf" in the directory ".../Fluent.Inc/fluent4.5/info/". There You will find more information about the uds in fluent4.5.
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Old   November 13, 2000, 23:44
Default Re: How to use user defined Subroutine
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Greg Perkins
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After reading the manuals, also look in the srcu folder under your Fluent.Inc/fluent4.5 installation - here you will find two folders - user and include. In the user one are the fortran templates of all user defined subroutines available in 4.5. In these you simply add your equations to calculate sources of momentum, energy, species etc. etc. and user properties for viscosity, thermal conductivity etc. etc. You can also check out the include files in the include folder, from which its possible to determine other internal variables which are useful but which aren't documented in ch20 of the manual.

Also see many previous posts on this forum.

Greg
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Old   November 14, 2000, 07:32
Default Re: How to use user defined Subroutine
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yang
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Thanks very much for your answers.I have read the pdf file and checked the file under user directory.But I have not the absoft Fortran compiler.
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