INFLUENCE OF THE EVAPORATION COEFFICIENT AND TEMPERATURE JUMPS ON THE THERMOPHORESIS OF A MODERATELY LARGE VOLATILE HIGH-VISCOSITY SPHERE IN A BINARY GAS MIXTURE WITH ALLOWANCE FOR VOLUME THERMODIFFUSION AND STEFAN EFFECTSS. N. D'yakonov,a E. V. Efremov,a L. V. Kotlyarova,a and Yu. I. Yalamov,b UDC 533.72 The theory of a uniform thermophoretic motion of a volatile high-viscosity sphere with the phase transition of one component of a moderately rarefied binary gas mixture on its surface has been constructed on the basis of the hydrodynamic method in the regime with slip. The relative influence of the evaporation coefficient and the boundary temperature jumps on the distributions of the velocities, temperatures, and concentrations of the volatile component and the thermophoresis rate has been analyzed. Allowance has been made for the thermodiffusion terms, Stefan effects, and the heat due to the convective transfer of the substance of the condensed phase. The formula obtained has wider limits of application than the existing results. The conclusions of the traditional theories are successfully generalized to the cases of weak and moderately strong processes of diffusion evaporation of a single high-viscosity droplet that moves in a nonuniformly heated binary mixture of gases. aOrel State University, Orel, Russia; bMoscow Pedagogical University, Moscow, Russia. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 76, No. 5, pp. 92-102, September-October, 2003. Original article submitted May 22, 2001; revision submitted December 16, 2002.