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read parameters into UDF

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Old   April 17, 2013, 10:38
Default read parameters into UDF
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Michal Vonka
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Hello everybody,

does anybody has ideas about filling a UDF at start of simulation with parameters, so I don't have to rebuild the library when I change a parameter in UDF?

Thanks
Michal
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Old   April 18, 2013, 02:38
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Paritosh Vasava
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Questions:
1. Do you mean that you want to write a UDF that modifies by itself?
2. Are you writing these UDF(s) for transient or steady-state simulations?
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Old   April 18, 2013, 03:20
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Michal Vonka
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ad 1) My original idea was to load a file of parameters into UDMemories, that would be used by all cells or any other way to stuff the UDF without need to changing it. That would require a new compilation, i guess.
ad 2) Ideally both, but that also depends on the demands on memory. I think I can live with steady state simulation only.
Thanks for any help.
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Old   April 19, 2013, 03:26
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Max
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Have a look at the UDF-Manual ->Scheme Macros. I think that's what you need.

cheers
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Old   April 19, 2013, 16:00
Default UDF Parameters
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Bill Wangard
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The way to do this is to define an rpvar. Once created in the CASE, rpvars are saved with the case file.

Rpvars are variables that can be passed to the UDF routines. Thus, you can easily modify the UDF without recompiling. Rpvars can be changed from the FLUENT GUI panel using simple scheme commands.

Look in the UDF manual on how to do this. If you need an example, please contact me directly:

bill.wangard@engrana.com

Regards,
Bill Wangard
Engrana LLC
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