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-   -   Unsteady Inlet B.C. Using UDF - Segmentation #@$! (http://www.cfd-online.com/Forums/fluent/29167-unsteady-inlet-b-c-using-udf-segmentation.html)

James Hart December 17, 2001 03:20

Unsteady Inlet B.C. Using UDF - Segmentation #@$!
 
Hi All

I copied the example for unsteady inlet velocity B.C.s from the manual, it is fine in both interpreted and compiled modes, apart from the fact it crashes! I set up a simple channel flow to test it, which runs with a constant velocity inlet, but as soon as I change to the unsteady velocity UDF and initialize or iterate I get the SEGMENTATION ERROR. I am new to Fluent and I dont know if this is the generic error.

I dont expect anyone to help neccesarily with the UDF prob (if you can then great!) but I want to know people's methods for discovering the roots of SEGMENTATION ERRORs, i.e. do you get better error mesgs by running from the command line????????

Thanks


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