【作者】 周本谋； 刘宗凯； 刘会星； 程峰； 单伟；

【Author】 ZHOU Ben-mou,LIU Zongkai,LIU Hui-xing,CHENG Feng,SHAN Wei (Key Lab of Transient Physics,Nanjing University of Science and Technology,Nanjing,Jiangsu 210094,China)

【机构】 南京理工大学瞬态物理重点实验室；

【摘要】 在翼型体、圆柱钝体和槽道壁表面生成一定时序与空间分布的电磁场,在相关流体边界层上产生一定时间尺度与空间尺度分布的电磁体积力(洛伦茨力),从而改变流体边界层的结构,实现了对翼型、钝体绕流流场的有效控制,达到控制流体边界层分离与脱落、消涡减阻与改善升力特性的目的.调整电磁体积力的时间顺序与空间分布范围,从而获得了一种研究多尺度湍流拟序结构的方法,为探索湍流结构、研究湍流的生成机理与演化过程提供了一种分析手段,为翼型、钝物体等的绕流控制提供了一种应用基础技术.更多还原

【Abstract】 The electromagnetic body forces(i.e.lorentz force,LF),which created by the electromagnetic field localized around the surface of hydrofoil and blunt body and channel wall, has the characteristic of multiple scales for spatio-temporal variates,and changing the configuration of boundary layer of fluid.By means of the electromagnetic body forces,there have been existed a lot of effectiveness of controlling the flow field structure around the hydrofoil and blunt body,restricting boundary layer separation and shedding,suppressing vortex and reducing drag force,and improving lift force distribution of hydrofoil,and so on.There have been achieved one of the methods for researching the complex scales coherent structure of turbulence, provided an experimental measures for exploring the mechanism of turbulence and the bursting process,and developed an applied techniques for modifying the flow fields around the hydrofoil and blunt bodies.更多还原