hi,

im trying to run a compiled udf which I got from one of the fluent manuals (so I know it should work), Ive definitely got my c source file in the same folder as my case file, and ive chosen the header file from the fluent installation directory (udf.h), but i always get an error:

'The system cannot find the file specified. 1 file copied

and then it doesnt build a library file, so I cant open it... any ideas? Thanks a lot

Can you place your UDF here??

Hi Kuba,

the UDF im using is from the UDF users manual, so its correct, Ive checked the log file and it just has:

'cl' is not recognized as an internal or external command, operable program or batch file. NMAKE : U1077: 'cl' : return code '0x1' Stop.

I have visual studio and a c compiler so im not sure what the problem is...the source file is in the same folder as the case/dat files and im using udf.h as the header file.. Thanks again in advance.

UDF: #include "udf.h" /* Define which user-defined scalars to use. */ enum { T4, MAG_GRAD_T4, N_REQUIRED_UDS }; DEFINE_ADJUST(adjust_fcn, domain) { Thread *t; cell_t c; face_t f; /* Make sure there are enough user-defined scalars. */ if (n_uds < N_REQUIRED_UDS) Internal_Error("not enough user-defined scalars allocated"); /* Fill first UDS with temperature raised to fourth power. */ thread_loop_c (t,domain) { if (NULL != THREAD_STORAGE(t,SV_UDS_I(T4))) { begin_c_loop (c,t) { real T = C_T(c,t); C_UDSI(c,t,T4) = pow(T,4.); } end_c_loop (c,t) } } } /* Fill second UDS with magnitude of gradient. */ thread_loop_c (t,domain) { if (NULL != THREAD_STORAGE(t,SV_UDS_I(T4)) && NULL != T_STORAGE_R_NV(t,SV_UDSI_G(T4))) { begin_c_loop (c,t) { C_UDSI(c,t,MAG_GRAD_T4) = NV_MAG(C_UDSI_G(c,t,T4)); } end_c_loop (c,t) } } thread_loop_f (t,domain) { if (NULL != THREAD_STORAGE(t,SV_UDS_I(T4)) && NULL != T_STORAGE_R_NV(t->t0,SV_UDSI_G(T4))) { begin_f_loop (f,t) { F_UDSI(f,t,MAG_GRAD_T4)=C_UDSI(F_C0(f,t),t->t0,MAG_GRAD_T4); } end_f_loop (f,t) } }