A mixed model for temperature structure functions in fully developed turbul
ent shear flows is constructed on the assumptions that the statistics of th
e energy dissipation rate epsilon is log-Poisson and the temperature dissip
ation rate N can be described by the beta model. The temperature structure
functions predicted by this mixed model are in excellent agreement with the
experimental data reported in the literature. [S1063-651X(98)08112-4].