Thermal force on aerosol particles

Abstract

With a method previously applied to thermal transpiration and planar radiometric force, the force on a spherical aerosol particle in a gas which sustains a temperature gradient is analyzed. Expressions for thermal force and thermal velocity span all values of the particle Knudsen number and show the effect of imperfect accommodation. The results are compared with other theories and with experimental data. Copyright © 1974 American Institute of Physics.