THREAD_STORAGE always == NULL

Luca

Hi all,

I have a udf wherein I impose a mass fraction gradient. Since at the first step the gradient is not defined, I placed a control like this:

if (NULL != THREAD_STORAGE(t,SV_Y_0_G))

dYfdy = C_YI_G(c,t,0)[1];

else

dYfdy = -0.1;

My problem is that THREAD_STORAGE(t,SV_Y_0_G) is ALWAYS equal to zero at every step (not only the first). And if I change my grid it seems to work.

Does anyone have idea why I have this problem?

Thanks guys, keep up the good work.

Luca