哈尔滨工程大学学报2026，Vol.47Issue(2)：281-289,9.DOI:10.11990/jheu.202406021
不同转速工况下喷水推进泵的空化流动试验研究
Experimental research on cavitation flow in water-jet pump at different rotational speed conditions
摘要
Abstract
In order to study the cavitation flow phenomenon and interference mechanism of vortex structure of water-jet pumps at different rotational speeds,this paper obtained the cavitation performance curves of water-jet pumps at different speeds based on the cavitation performance test of water-jet pump closed test bench at different speeds,and obtained the visualization pictures of cavitation vortex structure of water-jet pumps at different rota-tional speed conditions and different cavitation development degrees by high-speed photography technology.The evolution law of cavitation vortex structure of water-jet pumps with cavitation development at various rotational speeds was analyzed,and the influence of speed on the evolution of cavitation morphology of water-jet pumps was discussed.The results show that the reduction of speed increases the NPSHa value range of water-jet pump cavita-tion development and delays the cavitation development process of water jet pumps.At the same time,the reduc-tion of speed weakens the effect of mainstream on vortex structure,changes the cutting frequency of blades on cavi-tation vortex structure,and forms differences in motion displacement and collapse point position of cavitation flow structure at different rotational speed conditions.关键词
喷水推进泵/不同转速/高速摄影技术/空化性能试验/空化涡结构/空化演变规律/混流泵/不同空化工况/临界空化工况Key words
water jet pump/different rotational speed/high speed photograph/cavitation performance test/cavita-tion vortex structure/cavitation evolution/mixed-flow pump/different cavitation conditions/critical cavitation condition分类
能源科技引用本文复制引用
龙云,郑凯旋,万初瑞,蔡佑林,王宗龙..不同转速工况下喷水推进泵的空化流动试验研究[J].哈尔滨工程大学学报,2026,47(2):281-289,9.基金项目
国家自然科学青年基金项目(51906085) （51906085）
机械系统与振动国家重点实验室课题(MSV202203). （MSV202203）
