抄録
In order to find out the effect of imperfect accommodation of gas molecules at solid boundary on the flow due to thermal stress, the behavior of gas around an arbitrary but smooth shaped body with constant temperature which is placed in an infinite expanse of gas at rest with non-uniform temperature is investigated on the basis of the linearized Boltzmann-Krook-Welander equation and Maxwell type boundary condition for small Knudsen number. A formula for slip velocity due to thermal stress is derived. The slip coefficient is increased as the accommodation coefficient is decreased. A sphere placed in a gas with uniform temperature gradient is taken as an example. The physical mechanism how the flow is induced is also discussed.
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