Study on the effect of bubble number on the collapse of a multi-bubble system near the rigid wall
Study on the effect of bubble number on the collapse of a multi-bubble system near the rigid wall
复制标题
气泡数对刚性壁面附近多气泡系统溃灭影响的研究
DOI：
10.1016/j.oceaneng.2023.115290
复制
发表时间：
2023-09
影响因子：
5
通讯作者：
Sen Han;Yaxin Huang;Wenwei Fan;Qiyan Wang;T. Huang;Yu Li
中科院分区：
文献类型：
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作者：
Sen Han;Yaxin Huang;Wenwei Fan;Qiyan Wang;T. Huang;Yu Li
多气泡溃灭机理是大型潜水器研制中需要攻克的关键技术之一，迫切需要研究和探索。采用VOF方法研究了多气泡系统在刚性壁面附近的溃灭过程。分析了三种不同空泡数和四种不同初始空泡壁距下的空泡溃灭过程。得到了空泡数目和初始空泡壁距对空泡溃灭过程的影响规律，揭示了多个空泡在刚性壁面附近溃灭的机理。结果表明：在多气泡系统中，随着气泡数目的增加，气泡溃灭持续时间增加，最小气泡半径减小，最大中心压力增大。气泡离刚性壁面越近，气泡溃灭的持续时间越长，这也导致了多气泡系统的最大中心压力和最大界面速度的波动。研究结果有望为深潜器机械密封的设计和性能优化提供理论依据和技术支持。
The mechanism of multi-bubble collapse is one of the key technologies that need to be overcome in the development of large submersibles, which is urgently needed to study and explore. The VOF method is used to study the collapse process of a multi-bubble system near the rigid wall. The bubble collapse process is analyzed under three different bubble numbers and four different initial bubble wall distances. The influence of the number of bubbles and initial bubble wall distance on the bubble collapse process is obtained, and the mechanism of multi-bubble collapsing near the rigid wall is revealed. The results indicate that in a multi-bubble system, as the number of bubbles increases, the duration of bubble collapse increases, the minimum bubble radius decreases, and the maximum central pressure increases. The closer the bubble is to the rigid wall, the longer the duration of bubble collapse, which also lead to fluctuations in the maximum center pressure and maximum interface velocity of a multi-bubble system. The results of this study are expected to provide a theoretical basis and technical support for the design and performance optimization of deep submersible mechanical seals.