可持续性涡旋的产生与测量  

Generation and measurement of sustainable vortex

作　　者：郭瑞雪 王鹏程 周司维 林漫铃 陈倩[1] GUO Rui-xue;WANG Peng-cheng;ZHOU Si-wei;LIN Man-ling;CHEN Qian(School of Physical and Telecommunications Engineering,South China Normal University,Guangzhou 510006,China)

机构地区：[1]华南师范大学物理与电信工程学院,广东广州510006

出　　处：《物理实验》2020年第5期44-49,共6页Physics Experimentation

摘　　要：基于兰金涡原理设计了应用于实验室中的液体涡旋发生和测量装置,可产生形态稳定的涡旋,并能够测量得到涡旋的相关信息.通过设计电机在平静的水体中转动时使得水体受到剪切力,从而产生现象明显的涡旋,利用高速CCD相机记录涡旋状态图像序列,利用粒子图像测速法技术对图像序列中涡旋的速度、涡度等进行定量测量和定性分析.通过测量和分析速度分布,研究涡旋的具体结构,并总结涡旋其他物理量的分布规律,可以形象直观地演示出涡旋的产生及原理.A liquid vortex generating and measuring device based on Rankine vortex principle was designed,which could generate stable vortex and obtain the relevant information of vortex.By designing the motor to make the water subject to shear force when it rotated in the calm water,the phenomenon of vortex was obviously produced,and the image sequence of vortex state was recorded by high-speed CCD camera.Particle-image velocimetry was used to quantitatively measure and qualitatively analyze the velocity and vorticity of vortices in the image sequence.Finally,by measuring and analyzing the velocity distribution,the specific structure of the vortex was studied,and the distribution laws of other physical parameters of the vortex were summarized.The device could visually demonstrate the generation and principle of vortex,and had good teaching significance.

关 键 词：流体涡旋 单片机 CCD相机 PIV技术 涡度 

分 类 号：O351.2[理学—流体力学]