流れのはく離を伴う二次元弾性流路内の流れ : 旅路の激しい振動を扱う数学モデル

概要

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This paper presents a refined momentum equation for unsteady one-dimensional flow in a collapsible tube. The available momentum equations for such flow cases are not suitable to handle a situation in which the cross-sectional area of the tube changes rapidly with time. In order to overcome this, the present equation is derived taking into account the energy loss due to flow separation with good accuracy than the conventional ones. Then applying this equation to a flow in a two-dimensional channel made of a pair of elastic membranes, numerical calculations are performed. The predicted oscillations show that the separation point is almost located at where the channel width is the smallest, and that the oscillatory waves traveling on the membranes become predominant compared to those predicted by the conventional model.
一般社団法人日本機械学会の論文
1991-12-25