曲轴主轴承球上气泡崩塌时冲击特性的研究

2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA) Pub Date : 2022-10-01 DOI:10.1109/WCEEA56458.2022.00068

Jianhua Xiang, Cheng-jia Zhong, Kaicheng Li

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引用次数: 0

摘要

汽泡对内燃机主承重壁的冲击是引起汽蚀失效的重要因素。基于润滑油的平均雷诺方程和空化崩溃能量，建立了主轴承的热弹性流体力学(TEHD)模型和附在轴承壁上的油膜中气泡崩溃的流体体积(VOF)模型，分析了气泡崩溃时的载荷和流场分布，探讨了气泡崩溃时对轴承壁的冲击特性。结果表明:气泡破裂时，气泡从顶部开始下垂，直至破裂形成两个气泡;气泡在极短的时间内破裂，顶部射流对壁面的压力可达到31MPa以上。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Study on the characteristics of the impact produced when the bubble on the crankshaft's main bearing ball collapses

The impact produced when the bubble on the main bearing wall of an internal combustion engine is an important factor causing cavitation failure. Based on the average Reynolds equation of lubricating oil and the energy of cavitation collapse, the thermoelastic fluid dynamics (TEHD) model of the main bearing and the bubble collapse Volume of Fluid (VOF) model in the oil film attached to the bearing wall were established, the load and flow field distribution when the bubble collapses were analyzed, and the impact characteristics on the bearing wall when the bubble collapses were explored. The results show that: when the bubble collapses, it begins to sag from the top until it ruptures to form two bubbles; and within a very short period of time when the bubble collapses, the pressure of the top jet on the wall can reach 31MPa and above.

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2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA)

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