I already have case and UDF files but when i interpreted them,the error was happen. It informed that "error: udf compiler: cannot execute cpp". What does it mean and how to solve this problem.

FLUENT have a C interpreter, not a CPP interpreter, so try to change the file extension from CPP to C and don't use CPP commands in your interpreter UDF.

Hi

ap

Thank you for your suggestion. It means that I must use only C Programming for coding UDF. Right?

it display "c -ID:\FLUENT.INC\fluent5.5/src -ID:\FLUENT.INC\fluent5.5/cortex/src -ID:\FLUENT.INC\fluent5.5/client/src -ID:\FLUENT.INC\fluent5.5/multiport/src -I. -DUDFCONFIG_H="<udfconfig.h>" inlet.c error: udf compiler: cannot execute c -ID:\FLUENT.INC\fluent5.5/src -ID:\FLUENT.INC\fluent5.5/cortex/src -ID:\FLUENT.INC\fluent5.5/client/src -ID:\FLUENT.INC\fluent5.5/multiport/src -I. -DUDFCONFIG_H="<udfconfig.h>" inlet.c" please help me

Yes, you can use only C coding.

Hi

ap

To give more help we need to see your UDF code.

Hi

ap