すきま幅が変動し中心部からの吹出しを有する平行2円板間の非定常粘性流 : 中心部全圧の時間的変化が与えられる場合

概要

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This paper analyzes an unsteady viscous incompressible flow between two parallel disks with a time-varying gap width and a central fluid source whose total pressure is arbitrarily varied with time. The theoretical results obtained in the authors' previous papers, which analyzed the case where the rate of flow from the source is forcibly varied with time, are utilized, and the flow is now solved under the boundary conditions of a given time-varying total pressure of the fluid source by the Houbolt method. Experiments were carried out for the special case where the gap width is varied sinusoidally with time, and the total pressure of the fluid source is kept constant by making a hole at the center of the upper disk. The theoretical results are in good agreement with the experimental ones over a wide range of the oscillatory Reynolds number and nondimensional amplitude of the gap width.
一般社団法人日本機械学会の論文
1990-10-25