access to FIDAP-internal data from within a UDF
 

Dear all,

I am employing a user defined subroutine to specify wall-tangential velocities as boundary conditions (using a SLIP entity). Since this BC depends on a vector quantity the components of which are only known in the global XY coordinate system, I need to transform that vector quantity to the local wall-tangential coord. system for every node on the wall. Therefore I need to know the tangential and normal vectors FIDAP has computed for every node - how can I access this information from within my subroutine?

Thanks in advance,

Ingo