双圆柱体低速并联入水过程空泡及运动特性试验研究

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (7) : 42-49.

论文

路丽睿，魏英杰，王聪，宋武超，刘凯航

作者信息 +

Tests for cavities and motion characteristics in process of two-cylinder in parallel water entry at low speed

LU Lirui WEI Yingjie WANG Cong SONG Wuchao LIU Kaihang

Author information +

文章历史 +

摘要

为深入了解双圆柱体低速并联入水过程空泡演化及运动规律，本文基于高速摄像方法，开展了圆柱体低速并联入水试验研究。通过圆柱体单独入水和双圆柱体并联入水试验对比，分析了并联入水双空泡演化机理；进一步开展了不同入水速度试验，研究了入水速度对并联入水过程圆柱体运动特性的影响，并结合空泡演化规律，分析了空泡演化过程对圆柱体运动的影响机理。研究结果表明：圆柱体低速并联入水过程中，入水空泡呈现明显不对称特性；在非对称流体动力作用下，圆柱体产生了偏转与横向运动，且偏转运动受空泡闭合影响较大；两圆柱体运动特性曲线与双空泡形态呈现良好的对称性。

Abstract

To deeply study cavities evolution and motion laws in process of two-cylinder in parallel water-entry at low speed,tests for two-cylinder in parallel water-entry at low speed were conducted. The evolution mechanism of in parallel water-entry two-cavity was analyzed by comparing tests for a single cylinder water entry and those for two-cylinder in parallel water entry. The tests with different water-entry velocities were conducted to study the effects of water-entry velocity on cylinders’ motion characteristics in process of them in parallel water-entry. Combined with the evolution law of cavities,the influence mechanism of cavities evolution process on cylinders’ motion was analyzed. The results showed that in process of two-cylinder in parallel water-entry at low speed,cavities have obvious asymmetry; cylinders have lateral motion and excursion one under the asymmetric hydrodynamic action; cavities closure affects cylinders’ excursion motion obviously,the motion characteristic curves of two-cylinder and two-cavity morphology have a good symmetry.

导出引用

路丽睿，魏英杰，王聪，宋武超，刘凯航. 双圆柱体低速并联入水过程空泡及运动特性试验研究[J]. 振动与冲击, 2019, 38(7): 42-49

LU Lirui WEI Yingjie WANG Cong SONG Wuchao LIU Kaihang. Tests for cavities and motion characteristics in process of two-cylinder in parallel water entry at low speed[J]. Journal of Vibration and Shock, 2019, 38(7): 42-49

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