基于Ward模型的低成本人造龙卷风发生装置及涡旋参量的三维测量  

Low-cost artificial tornado generator based on Ward model and three-dimensional measurement of vortex parameters

作　　者：叶智丰 陈若琳 黄慧敏[1] 曾启文 李翠莹 彭力[1] YE Zhi-feng;CHEN Ruo-lin;HUANG Hui-min;ZENG Qi-wen;LI Cui-ying;PENG Li(School of Physics and Telecommunication 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8期50-54,60,共6页Physics Experimentation

基　　金：国家自然科学基金项目(No.61975058);广州市科技计划项目(No.201704020137);蓝盾科技项目(No.LD20170209)。

摘　　要：搭建了基于Ward模型的低成本人造龙卷风发生装置.改变进风角度、进风量可改变涡流比,产生不同形态的稳定的可视化涡旋.通过智能车带动热敏风速探头对龙卷风风场参量进行探测,分析不同涡流比下龙卷风不同高度横截面的切向、径向、纵向速度和核心半径等涡旋参量.实验结果表明,龙卷风切向风速随半径先升高后降低,纵向和径向风速随高度的增加而减小.A low-cost artificial tornado generator based on the Ward model was built.Changing the inlet air angle and the inlet air volume could change the vortex ratio and produce stable visual vortices of different shapes.The intelligent car drove a thermal wind speed probe to detect the tornado wind field parameters,and to analyze the tangential,radial,longitudinal speed and core radius and other vortex parameters of the tornado at different height cross sections under different vortex ratios.The experimental results showed that the tangential wind speed of the tornado increased with the radius at first and then decreased,and the longitudinal and radial wind speed decreased with the height.

关 键 词：人造龙卷风 涡流 WARD 智能车 三维测速 

分 类 号：O4-39[理学—物理] P445.1[天文地球—大气科学及气象学]