钝体绕流的分隔板控制技术研究进展  

REVIEW ON THE CONTROL OF FLOW OVER A BLUFF BODY USING SPLITTER PLATESZ

作　　者：张力[1,2] 丁林[1] 

机构地区：[1]重庆大学动力工程学院,重庆400044 [2]重庆大学新型微纳器件与系统技术国家重点学科实验室,重庆400044

出　　处：《力学进展》2011年第4期391-399,共9页Advances in Mechanics

基　　金：新型微纳器件与系统技术国家重点学科实验室基金项目(2009MS04)资助~~

摘　　要：钝体是工程中一种常见结构,流体绕过钝体时产生的旋涡脱落易诱发结构振动,进而导致结构破坏.钝体后安装分隔板是一种典型的被动控制技术,分隔板推迟钝体尾流区剪切层之间的相互作用,进而有效改变钝体后旋涡脱落及尾迹特性,延长结构寿命,并且可以利用钝体-分隔板结构进行能量收集.本文全面回顾了利用分隔板进行流动控制和能量收集的研究及应用现状,分析了分隔板长度及分隔板与钝体的距离对钝体受力情况和旋涡脱落频率的影响,比较了各种不同形状的钝体在安装分隔板后的受力和尾迹特性,并指出利用钝体-分隔板结构设计能量收集系统是扩展清洁能源开发利用的一个研究重点.Bluff bodies are widely used in engineering. The vortex shedding behind bluff bodies can induce vibration and thereby cause structural damage. Adding a splitter plate downstream of a bluff body is an efficient passive control technique. The interaction between shear layers is postponed by the splitter plate. Then vortex shedding and near wake interaction of the bluff body are controlled efficiently, and then the service life of structure will be extended. The body-plate configuration can also be used for energy harvesting. This article presents the current state of wake controlling and power harvesting by setting splitter plates around bluff bodies. The effects of splitter plates on the frequency and mechanical characteristics are analyzed for different shapes of bluff bodies are analyzed. In addition, the development trend of bluff body-splitter plate configuration and the research emphases are also suggested in this paper, and the energy harvesting system which originates from this configuration is pointed out as an important tendency for clean energy utilization.

关 键 词：分隔板 钝体 旋涡脱落 流动控制 能量收集 

分 类 号：O357.1[理学—流体力学]