限制在有障碍物的腔内的平面射流自振荡的实验研究

Thierry Pacheu, Yves Le Guer, Lionel Lalanne, René Creff
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引用次数: 2

摘要

本文研究了二维平面射流从矩形喷嘴进入有物体的空腔时的振荡现象。结果表明,在远离振动下限的地方,自持续振动的频率只受几何参数的控制。Strouhal对雷诺数的演化表明,崖体下游几何形状的影响对控制振荡机制很重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Étude expérimentale des auto-oscillations d'un jet plan confiné au sein d'une cavité contenant un obstacle

We investigate the oscillation phenomena occurring when a two-dimensional plane jet emerges from a rectangular nozzle into a cavity with a body inside. It is shown that far from the lower oscillation limit, the frequencies of self-sustained oscillations are only governed by geometrical parameters. The evolutions of the Strouhal versus Reynolds number show that the effect of the geometry downstream the bluff-body is important for the control of the oscillation mechanism.

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