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喷水推进泵临界空化工况空化流态试验

龙云 冯超 王路逸 王德忠 蔡佑林 朱荣生

龙云, 冯超, 王路逸, 等 . 喷水推进泵临界空化工况空化流态试验[J]. 北京航空航天大学学报, 2019, 45(8): 1512-1518. doi: 10.13700/j.bh.1001-5965.2018.0734
引用本文: 龙云, 冯超, 王路逸, 等 . 喷水推进泵临界空化工况空化流态试验[J]. 北京航空航天大学学报, 2019, 45(8): 1512-1518. doi: 10.13700/j.bh.1001-5965.2018.0734
LONG Yun, FENG Chao, WANG Luyi, et al. Experiment on cavitation flow in critical cavitation condition of water-jet propulsion pump[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(8): 1512-1518. doi: 10.13700/j.bh.1001-5965.2018.0734(in Chinese)
Citation: LONG Yun, FENG Chao, WANG Luyi, et al. Experiment on cavitation flow in critical cavitation condition of water-jet propulsion pump[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(8): 1512-1518. doi: 10.13700/j.bh.1001-5965.2018.0734(in Chinese)

喷水推进泵临界空化工况空化流态试验

doi: 10.13700/j.bh.1001-5965.2018.0734
基金项目: 

上海市经信委项目 15GFZ-GB02-060

中国博士后科学基金 2019M651734

详细信息
    作者简介:

    龙云  男, 博士, 助理研究员。主要研究方向:空化与多相流、高效高可靠性泵水力设计

    王德忠  男, 博士, 教授, 博士生导师。主要研究方向:核电泵阀、辐射与防护

    通讯作者:

    王德忠, E-mail: dzwang@sjtu.edu.cn

  • 中图分类号: TK72

Experiment on cavitation flow in critical cavitation condition of water-jet propulsion pump

Funds: 

Shanghai Economy Information Technology Committee Project 15GFZ-GB02-060

China Postdoctoral Science Foundation 2019M651734

More Information
  • 摘要:

    在舰艇空间尺寸的限制下,提高推进器的综合性能是舰船设计的关键。空化是喷水推进泵的主要噪声源和重要设计参数。为降低舰艇的噪声,提高喷水推进泵的空化性能,十分有必要研究空化流动结构演变规律及其对喷水推进泵性能的影响。以某型喷水推进泵为研究对象,采用高速摄像技术开展了喷水推进泵临界空化工况空化流动结构演变规律试验研究。在空化发生和发展过程中,喷水推进泵空化流动结构包括片状空化、云状空化、叶顶间隙空化、叶顶泄漏涡空化和垂直空化涡。试验捕捉了空化演变的物理过程,分析了各空化流动结构对喷水推进泵性能下降的影响。结合数值模拟和前人研究,阐述了空化流动结构形成机理及其对喷水推进泵性能的影响。研究结果为喷水推进泵内的空化现象提供了新的认识,也为空化性能预测方法的研究给予了借鉴和指导。

     

  • 图 1  高速摄像可视化系统

    Figure 1.  High-speed photography visualization system

    图 2  喷水推进泵过流部件三维模型

    Figure 2.  Flow passage components' 3D model of water-jet propulsion pump

    图 3  设计工况下喷水推进泵的空化性能曲线

    Figure 3.  Water-jet propulsion pump cavitation performance curve under design condition

    图 4  喷水推进泵叶顶间隙流动结构[20]

    Figure 4.  Flow structures around vane tip clearance in water-jet propulsion pump[20]

    图 5  临界空化工况点不同叶轮旋转角度空化流动结构及其演变规律

    Figure 5.  Cavitation flow structure and its evolution law at different rotating angle of impeller under critical cavitation condition

    图 6  临界空化工况下数值计算得到的空化涡结构

    Figure 6.  Cavitation vortex structures calculated by CFD under critical cavitation condition

    图 7  片状空化的脱落和垂直空化涡的形成[23]

    Figure 7.  Perpendicular cavitation vortex being re-oriented and formed at sheet cavitation trailing edge[23]

    图 8  随汽蚀余量降低的空化发展过程[23]

    Figure 8.  Progression of cavitation with cavitation number decreasing[23]

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出版历程
  • 收稿日期:  2018-12-18
  • 录用日期:  2019-03-08
  • 刊出日期:  2019-08-20

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