液压碎石器内部气穴可视化分析

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摘要液压碎石器内部的气穴现象是一种既隐秘且有害的瞬态过程。气穴的发生不仅影响流体传动的连续性，同时气泡溃灭过程会造成强烈的振动和噪声，更重要的是会在零件表面产生气蚀。因此，在建立气穴模型的基础上，参考主机液压系统管路布置，搭建了包含动力系统及控制系统的整机AMESim仿真模型并对其进行了运算。为进一步分析气穴流场的变化规律，进行了AMESim软件与数值模拟软件的联合仿真。最后将仿真结果与工程实际中出现的气蚀真相进行对比。结果表明：在活塞加速冲程末段，活塞后腔出现了气穴现象，同时在缸体内壁气穴现象最严重。实际工作中出现气蚀的零件以及该零件上呈现气蚀的位置与数值计算结果中显现气穴现象的位置完全吻合。
关键词：液压碎石器；气穴现象；AMESim模型；动网格；联合仿真；对比实验

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	柴红强1
	杨国来1
	苏华山2
	邓龙3

关键词 ：液压碎石器, 气穴现象, AMESim模型, 动网格, 联合仿真, 对比实验

Abstract：Cavitation phenomenon inside the hydraulic lithotripter is a transient process that is both insidious and harmful. The occurrence of cavitation not only affects the continuity of fluid transmission, but also causes strong vibration and noise in the process of bubble collapse, and more importantly, cavitation occurs on the surface of the parts. Therefore, based on the establishment of the cavitation model, referring to the piping layout of the hydraulic system of the main engine, the AMESim simulation model of the whole machine including the power system and the control system was built and calculated. In order to further analyze the variation law of cavitation flow field, the co-simulation of AMESim software and numerical simulation software was carried out. Finally, the simulation results are compared with the reality of cavitation in engineering practice. The results show that the cavitation phenomenon occurs in the rear cavity of the piston at the end of the acceleration stroke of the piston, and the cavitation phenomenon is the most serious in the inner wall of the cylinder. The parts with cavitation in the actual work and the position of the cavitation on the part are completely consistent with the position of the cavitation phenomenon in the numerical calculation results.
Key words：hydraulic lithotripter; cavitation phenomenon; AMESim model; dynamic mesh; co-simulation; comparative experiment

Key words： hydraulic lithotripter cavitation phenomenon AMESim model dynamic mesh co-simulation comparative experiment

收稿日期: 2022-04-21 出版日期: 2022-11-15

引用本文:

柴红强1，杨国来1，苏华山2，邓龙3. 液压碎石器内部气穴可视化分析[J]. 振动与冲击, 2022, 41(21): 140-147.
CHAI Hongqiang1, YANG Guolai1, SU Huashan2, DENG Long3. Visual analysis of cavitation inside hydraulic stone crusher. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(21): 140-147.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I21/140

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