near wall treatment error, urgent

JD

Hi, I am trying to impose Launder-Sharma's Near Wall boundary condition for term D, which is mentioned as follows, but I am gettinig error saying 'structure reference not implemented' at line: Thread *t0 = t->t0; can anybody help me in this regard? DEFINE_PROFILE(wall_d_bc,t,position) {

Thread *t0 = t->t0; /*where t0 is a cell thread */ face_t f; cell_t c0; real xw[ND_ND],xc[ND_ND],dx[ND_ND],rootk,dy,drootkdy; begin_f_loop(f,t) { c0=F_C0(f,t); rootk = sqrt(MAX(C_UDSI(c0,t0,TKE),0.)); F_CENTROID(xw,f,t); C_CENTROID(xc,c0,t0); ---------------------- --------