Diffusiophoresis of a Spherical Volatile Particle
KYOTO UNIV (JAPAN) DEPT OF AERONAUTICS AND ASTRONAUTICS
Pagination or Media Count:
A spherical condensed phase volatile particle is placed in an infinite expanse of a binary mixture consisting of the vapor of the condensed phase and another noncondensable gas. The mixture is assumed to be at rest with uniform pressure and temperature at infinity. However, the vapor and the noncondensable gas have small uniform density or concentration gradients of the same magnitude but in the opposite direction. The flows of both components around the particle are analyzed numerically by a finite-difference method on the basis of a model Boltzmann equation for gas mixtures, and the force acting on the particle diffusiophoretic force is obtained accurately for a wide range of the Knudsen number.
- Physical Chemistry
- Theoretical Mathematics