On Knudsen flows within thin tubes. (English) Zbl 0629.76079

The dynamics of a test particle in an infinite tube is investigated. It is proven that the evolution tends to that of a diffusion process as the radius of the tube decreases to zero.


76N15 Gas dynamics (general theory)
76N20 Boundary-layer theory for compressible fluids and gas dynamics
82B40 Kinetic theory of gases in equilibrium statistical mechanics
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