摘要：Based on bubble dynamics theory, a mathematic model describing the cavitation bubble size variation in the flow field of self-resonating cavitating jet was developed considering the pressure field and mass and heat exchange between cavitation bubble and ambient fluid. With this model, the influence factors on the cavitation intensity are investigated. The results show that the destructiveness of cavitating jet in breaking rocks depends on the bubble’s first collapse, with decreasing intensity in the subsequent collapses. The self-resonating effect significantly enhances the cavitation intensity by promoting the collapse pressure and elongating its duration. Hydraulic parameters are proven to be the dominating factors influencing cavitation intensity: while collapse intensity monotonously increases with jet velocity, there exists an optimum ambient pressure where highest collapse intensity can be achieved. Conversely, the fluid properties show minor influences: cavitation intensity only slightly decreases with the increasing of fluid’s density and barely changes with the variation of viscosity and surface tension. The results from this investigation help to uncover the mechanism of the enhanced erosion potential of self-resonating cavitating jet. The conclusions can be used to further improve the performance of self-resonating cavitating jet in field applications.
© 2018, The Editorial Board of Petroleum Exploration and Development. All right reserved.

ISSN号：1000-0747

卷、期、页：v 45,n 2,p326-332

发表日期：2018-04-23

期刊分区（SCI为中科院分区）：无

收录情况：EI（工程索引）

发表期刊名称：Shiyou Kantan Yu Kaifa/Petroleum Exploration and Development

通讯作者：彭可文,郭肇权

第一作者：田守嶒,李根生,黄中伟,杨睿月

论文类型：期刊论文

论文概要：彭可文,田守嶒,李根生,黄中伟,杨睿月,郭肇权，Bubble dynamics characteristics and influencing factors on the cavitation collapse intensity for self-resonating cavitating jets，Shiyou Kantan Yu Kaifa/Petroleum Exploration and Development，2018，v 45,n 2,p326-332

论文题目：Bubble dynamics characteristics and influencing factors on the cavitation collapse intensity for self-resonating cavitating jets