Can anybody help me out in this problem... first the contours of temperature on a blade surface was plotted..the temperature was as expected..then mass-wieghted temperature (surface integral)was calculated on the blade surface..it was ZERO K!...so ,when again temperature contour was plotted again it was ZER0 K! throught on the blade surface....so exit fluent without saving this case and repeat the process all over again but to see the same results..

Regards Theju

It's clear because velocity in the wall is zero. For your case, I recommend that you use 'area weighted average'. See the definition of 'mass weighted average' in the manual or fluid dynamics textbook.

Sincerely, Jinwook