自激脉冲射流技术研究与应用进展  

Research and Application Progress of Self-excited Pulsed Jet Technology

作　　者：李君[1,2] 高传昌[2] 

机构地区：[1]西安理工大学,西安710048 [2]华北水利水电大学,郑州450011

出　　处：《南水北调与水利科技》2013年第4期187-191,共5页South-to-North Water Transfers and Water Science & Technology

基　　金：国家自然科学基金项目(90410019);水利部公益性行业科研专项经费项目(201201085);河南省教育厅科学技术研究重点项目(12A570003)

摘　　要：射流泵因具有结构简单、成本较低等一系列优点而被广泛应用于水利和航天等领域,但传质和传能效率较低的问题一直制约其快速发展和进一步应用。不过近些年来的大量试验研究表明,自激脉冲射流技术产生的脉冲射流具有更大的冲击力,并可明显提高射流泵的效率。在分析大量文献的基础上,介绍了脉冲射流产生的方法和他源式脉冲射流研究进展,重点阐述了自激脉冲射流的研究与应用进展、存在的主要问题和下一步的研究方向。最后,针对目前我国水库清淤的现状和存在的问题,分析了将自激脉冲射流技术和人工异重流相结合,进行射流清淤等工程实践应用之前的研究工作重点。Due to the advantages of simple structure and low cost,jet pump is widely used in the fields of water conservancy and aerospace. However,the problems of low efficiency in mass and energy transfer hinder it＇s the rapid development and further application of jet pump. A large number of experimental studies in recent years showed that the efficiency of jet pump can be strengthened with the application of self-excited pulsed jet because it can generate the pulsing jet with higher impact force. In this paper, the generation method of pulsed jet and the research progress of external excited pulsed jet were introduced,and the research and application progress,main problems, and further research interests of self-excited pulsed jet were discussed. Fur thermore, in view of the current situations and problems of reservoir dredging in China, the self-excited pulsed jet technology can be combined with artificial density flow to carry out the engineering practice of cleaning by pulsed jet.

关 键 词：射流泵 效率 冲击力 脉冲射流 自激振荡 射流清淤 人工异重流 

分 类 号：TV136.2[水利工程—水力学及河流动力学] TP69[自动化与计算机技术—控制理论与控制工程]