AM06-20-009 蒸気・非凝縮性気体からなる混合気体の円筒Couette流(分子スケールの流れ(2),一般講演)

概要

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A binary mixture of gases is confined in a gap between two coaxial circular cylinders rotating at different angular velocities. One of the component gases is the vapor of the substance that forms the cylinders, so that evaporation or condensation (or sublimation) of the vapor may take place on the surfaces of the cylinders. The other component is a noncondensable gas that neither evaporates nor condenses on the surfaces. Axisymmetric and axially uniform flows (the cylindrical Couette flow) of such a mixture are investigated on the basis of kinetic theory with special interest in the continuum (or fluid-dynamic) limit in which the Knudsen number goes to zero. A systematic asymptotic analysis as well as a Monte Carlo simulation for small Knudsen numbers is performed, and some nontrivial phenomena such as the ghost effect and the flow bifurcation are clarified.
日本流体力学会の論文
2006-09-05