北京航空航天大学学报 ›› 2019, Vol. 45 ›› Issue (8): 1512-1518.doi: 10.13700/j.bh.1001-5965.2018.0734

• 多相流测量 • 上一篇    下一篇

喷水推进泵临界空化工况空化流态试验

龙云1,2, 冯超3, 王路逸3, 王德忠2, 蔡佑林3, 朱荣生1   

  1. 1. 江苏大学 国家水泵及系统工程技术研究中心, 镇江 212013;
    2. 上海交通大学 机械与动力工程学院, 上海 200240;
    3. 中国船舶工业集团公司第七〇八研究所 喷水推进技术重点实验室, 上海 200111
  • 收稿日期:2018-12-18 出版日期:2019-08-20 发布日期:2019-09-06
  • 通讯作者: 王德忠 E-mail:dzwang@sjtu.edu.cn
  • 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。
  • 基金资助:
    上海市经信委项目(15GFZ-GB02-060);中国博士后科学基金(2019M651734)

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

LONG Yun1,2, FENG Chao3, WANG Luyi3, WANG Dezhong2, CAI Youlin3, ZHU Rongsheng1   

  1. 1. National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China;
    2. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
    3. Science and Technology on Water Jet Propulsion Laboratory, Marine Design & Research Institute of China, Shanghai 200111, China
  • Received:2018-12-18 Online:2019-08-20 Published:2019-09-06
  • Supported by:
    Shanghai Economy Information Technology Committee Project (15GFZ-GB02-060); China Postdoctoral Science Foundation (2019M651734)

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。

关键词: 喷水推进泵, 临界空化工况, 高速摄像, 空化, 空化涡结构

Abstract: Under the limiation of ship space, it is the key of ship design to improve the comprehensive performance of propeller. Cavitation is the main noise source of water-jet propulsion pump, so it is an important design parameter of water-jet propulsion pump. In order to reduce the noise of the ship and improve the cavitation performance of the water-jet propulsion pump, it is necessary to study the evolution law of the cavitation flow structure and its influence on the pump performance. In this paper, the evolution mechanism of cavitation flow structures in the critical cavitation conditions of water-jet propulsion pump is captured by high-speed photography. The cavitation flow structures of the water-jet propulsion pump during the occurrence and development of cavitation include sheet cavitation, cloud cavitation, tip leakage cavitation, tip vortex cavitation and vertical cavitation vortex. The experiment captures the physical process of cavitation evolution and the effect of each cavitation flow structure on pump performance degradation is analyzed. Combined with simulation and previous research, this paper further expounds the formation mechanism of cavitation flow structure and its influence on the pump performance.The research results not only provide new understanding of the cavitation phenomenon in the water-jet propulsion pump, but also provide reference and guiding significance for the study of cavitation performance prediction methods.

Key words: water-jet propulsion pump, critical cavitation condition, high-speed photography, cavitation, cavitation vortex structure

中图分类号: 


版权所有 © 《北京航空航天大学学报》编辑部
通讯地址:北京市海淀区学院路37号 北京航空航天大学学报编辑部 邮编:100191 E-mail:jbuaa@buaa.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发