轴线间距对圆柱体低速并联入水空泡演化影响试验研究

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振动与冲击 ›› 2020, Vol. 39 ›› Issue (12) : 272-280.

论文

卢佳兴，王聪，魏英杰，路丽睿，宋武超，檀世昱

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An experimental study on the effect of axis distances on the cavity evolution in the low-speed water entry process of two parallel cylinders

LU Jiaxing, WANG Cong, WEI Yingjie, LU Lirui, SONG Wuchao, TAN Shiyu

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摘要

为分析圆柱体并联入水过程中入水空泡间相互干扰对于空泡演化特性影响规律，采用基于高速摄像的方法，开展两圆柱体同步并联入水试验研究。通过圆柱体单独入水和双圆柱体并联入水试验对比，分析了圆柱体同步并联入水空泡演化特性与单独入水空泡演化特性的差异，揭示了同步并联入水双空泡演化机理,并进一步给出了入水空泡随轴线间距的变化特性。试验结果表明：并联入水过程中，双空泡形态在空间上呈现出了较好的镜面对称特征；对于深闭合入水空泡，随着两圆柱体轴线间距的增大，空泡在两圆柱体轴线内侧区域的发展程度逐渐提升，且水深较浅处的发展程度提升幅度大于较深处；对于表面闭合入水空泡，随着两圆柱体轴线间距增大，内测区域空泡逐渐趋于饱满，云化现象也逐渐减弱。

Abstract

In order to analyze the influence of cavity interactions on themselves in the parallel water entry process, the experimental study on the parallel water entry was carried out based on the method of high-speed photography. Comparing the results of the experiments of double cylinder with single cylinders, changes of cavity evolution in the water entry process of two parallel cylinders were observed, the cavity evolution mechanism and the varing laws of cavity evolution with the variation of axis distances were obtained. It was shown that the shape of double cavity keeps mirror symmetry in the process of parallel water entry; For the cavity closed below water surface, with the increase of the axis distance of two cylinders, the cavity contour in the inner region between two cylinders grows larger, and the growth in the deeper depth is smaller than which in the shallower depth. For the cavity closed on the water surface, with the increase of the axis distance, the cavity growth in the inner region between two cylinders tends to be fuller and the clouding phenomenon gradually weakens off.

导出引用

卢佳兴，王聪，魏英杰，路丽睿，宋武超，檀世昱. 轴线间距对圆柱体低速并联入水空泡演化影响试验研究[J]. 振动与冲击, 2020, 39(12): 272-280

LU Jiaxing, WANG Cong, WEI Yingjie, LU Lirui, SONG Wuchao, TAN Shiyu. An experimental study on the effect of axis distances on the cavity evolution in the low-speed water entry process of two parallel cylinders[J]. Journal of Vibration and Shock, 2020, 39(12): 272-280

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