A Flow Induced by Thermal Stress in Rarefied Gas

抄録

A new type of flow which is induced by thermal stress in rarefied gas is presented by investigating a behavior of gas around a sphere with a constant temperature which is placed in an infinite expanse of gas at rest with a uniform temperature gradient.
The analysis is based on the asymptotic theory for slightly rarefied gas developed by the author.
A flow with magnitude of the order of the Kundsen number squared is induced from hotter to colder region. The sphere is subject to a force in the direction of the given temperature gradient.