Hello, everybody

I have tried to compile the following source code (as interpreted code) in Fluent 6.0. It is given as an example UDF by Fluent but the statement t0 = t->t0; is not recognised by the compiler. The comment it gives is: "line 25: structure reference not implemented". Please, give me some help. Thank you.

Johannes Soulis Greece

#include "udf.h"

DEFINE_PROFILE(coupled_uds, t, position)

{ real C1_COORD[ND_ND]; real C0_COORD[ND_ND]; real F_COORD[ND_ND]; real x0[ND_ND],x1[ND_ND],Area[ND_ND],DIFF0,DIFF1,y; real Coef0,Coef1; real e_x0[ND_ND],e_x1[ND_ND];

cell_t c0; cell_t c1; Thread *t0; Thread *t1; face_t f;

real A0,A1,dx0,dx1;

begin_f_loop(f, t)

{ c0 = F_C0(f, t); c1 = F_C1(f, t); t0 = t->t0; t1 = t->t1; C_CENTROID(C0_COORD, c0, t0); C_CENTROID(C1_COORD, c1, t1); F_CENTROID(F_COORD, f, t); NV_VV(x0, =, F_COORD, -, C0_COORD); dx0 = NV_MAG(x0); NV_VV(x1, =, F_COORD, -, C1_COORD); dx1 = NV_MAG(x1);

NV_VS(e_x0, =, x0, /, dx0); /* e_x0 is the unit vector */ NV_VS(e_x1, =, x1, /, dx1); /* e_x1 is the unit vector */

F_AREA(Area, f, t); Coef0 = (dx0 * NV_MAG(Area))/NV_DOT(Area,e_x0); Coef1 = (dx1 * NV_MAG(Area))/NV_DOT(Area,e_x1);

Coef0 = sqrt(Coef0*Coef0); Coef1 = sqrt(Coef1*Coef1);

DIFF0 = C_UDSI_DIFF(c0,t0,0); DIFF1 = C_UDSI_DIFF(c1,t1,0);

A0 = DIFF0/Coef0; A1 = DIFF1/Coef1;

y = (A0 * C_UDSI(c0,t0,0) + A1 * C_UDSI(c1,t1,0)) / (A0 + A1);

F_PROFILE(f, t, position) = y;

} end_f_loop(f, t) }

as I remember, the "structure" date type can not be used in interpreted udf. Hope it helps.

Regards

Emma

If you use such a kind of istruction, you have to use compiled UDF.

Hi

ap

yes ap had answered to your questions.

When you are using interpreted UDF's you cannt use the by accessing memory.