增强自由紊动射流卷吸、掺混性能的研究  

Research on Free Turbulent Jet's Enhancement of Entrainment and Mixing Performance

作　　者：梁兰健 袁鹏[1,2] 李仁军 

机构地区：[1]中国海洋大学工程学院,山东青岛266100 [2]青岛市海洋可再生能源重点实验室,山东青岛266100

出　　处：《海洋技术学报》2017年第5期127-134,共8页Journal of Ocean Technology

摘　　要：射流作为流体运动的一种特殊形式,在工程中具有非常广泛的应用。其中,卷吸和掺混效应是射流的两大重要特征,其影响贯穿射流发展的整个过程。长期以来研究人员从理论分析、实验测量和数值模拟等几个方面对射流的卷吸、掺混性能进行了大量的研究工作,并探索出多种提高射流卷吸、掺混性能的方法。文中从喷嘴形状,喷嘴数目,喷嘴间距,喷嘴矩形截面宽高比和射流流速比等几个方面,对增强射流卷吸、掺混性能的研究方法、研究现状和研究结果进行了整理、分析,讨论了该领域存在的问题,并对该领域的研究方向进行了展望。As a special form of fluid movement, the jet is widely used in engineering. Entrainment and mixing effect are the two important characteristics of jet, with their action existing through the whole process of jet. A lot of research work has been made on entrainment and mixing performance of jet in the aspects of theoretical analysis, experimental measurement and numerical simulation, and many methods have been raised to improve the entrainment and mixing performance. In this paper, the methods, current status and results of the research on how to enhance jet＇s entrainment and mixing performance are summarized and analyzed in the aspects of nozzle＇s shape, number of nozzels, nozzel spacing, aspect ratio and jet＇s velocity ratio. In addition, some existing problems are discussed and the research directions in this field are also prospected.

关 键 词：射流 流体运动 卷吸 掺混 

分 类 号：TV132[水利工程—水力学及河流动力学]