摘要
由于传统的空化控制方法无法有效改善高速液氧泵的空化性能,提出一种基于涡流发生器的高速泵空化控制策略。在前期水翼空化控制研究的基础上,采用数值模拟方法分析不同涡流发生器放置方法对高速泵的抗气蚀影响。结果显示:涡流发生器能够减少湍流波动引起的耗散损失,但不同位置的涡流发生器对空化的影响存在差异;通过寻找最佳的涡流发生器放置位置,发现距离前缘120°和150°处的布置方式可以获得较好的抗汽蚀性能,在这些位置叶轮内的空泡量以及涡流强度显著降低,临界汽蚀余量也随之下降。本文的研究结果可为高速液氧泵的空化控制提供参考。
This paper aims to investigate the impact of vortex generator application on cavitation within a high-speed liquid oxygen pump.Due to the limitations of traditional cavitation control methods in enhancing the cavitation performance of high-speed liquid oxygen pumps effectively,this paper proposes a cavitation control strategy based on vortex generators for high-speed pump applications.Builded on previous research on water wing cavitation control,numerical simulation methods were employed to analyze the effects of different vortex generator placement methods on the pump's erosion resistance.The research results demonstrate that vortex generators can reduce the dissipative losses caused by turbulent fluctuations,but their influence on cavitation varies depending on their specific positions.By identifying the optimal placement of vortex generators,it was found that positioning them at 120°and 150°from the leading edge achieves better erosion resistance performance.At these positions,the cavitation volume within the impeller,as well as the vortex intensity,are significantly reduced,which leading to a decrease in the NPSHc.The findings of this study provide valuable insights for cavitation control in high-speed liquid oxygen pumps.
作者
李岷谓
邱宁
朱涵
伍杰
徐佩
张惟斌
LI Minwei;QIU Ning;ZHU Han;WU Jie;XU Pei;ZHANG Weibin(Research Center of Fluid Machinery Engineering Technology,Jiangsu University,Zhenjiang 212013 China;Key Laboratory of Fluid and Power Machinery,Ministry of Education,Xihua University,Chengdu 610039 China)
出处
《西华大学学报(自然科学版)》
2025年第4期62-72,共11页
Journal of Xihua University:Natural Science Edition
基金
国家自然科学基金项目(51806082)
江苏省“双创博士”项目(18SCBS016)
中国博士后科学基金面上项目(2020M671363)
江苏省博士后科研资助计划项目(2020Z98)
中国博士后科学基金特别资助项目(2021T140282)
流体及动力机械教育部重点实验室开放基金(LTDL-2023009)。
关键词
高速液氧泵
涡流发生器
空化控制
数值模拟
临界汽蚀余量
high-speed liquid oxygen pump
vortex generator
cavitation control
numerical simulation
NPSHc
