Measurement of aerodynamic forces and flow field of a soccer ball in a wind tunnel for knuckle effect
Measurement of aerodynamic forces and flow field of a soccer ball in a wind tunnel for knuckle effect
复制标题
在风洞中测量足球的指节效应空气动力和流场
DOI：
10.1016/j.proeng.2010.04.017
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
K. Seo
中科院分区：
文献类型：
--
作者：
M. Murakami;Masakazu Kondoh;Yuta Iwai;K. Seo
为了研究足球的关节效应，进行了风洞实验。在本实验中，我们测量了一个球的表面压力和气动力，并进行了簇状网格可视化来研究球后的尾迹结构。我们特别感兴趣的是，在超临界Re范围内，球后的旋涡结构运动所产生的关节效应的看似随机的性质，以及引起关节效应的详细机制。讨论还将涉及棒球和排球的指关节球。
Wind tunnel experiments have been conducted to investigate the knuckle effect of a soccer ball. In the present experiment, we measured the surface pressure of a ball as well as aerodynamic forces, and made tuft grid visualization to investigate wake structure behind a ball. We are in particular interested in the seemingly random nature of the knuckle effect resulting from the movement of vortical structure behind a ball in the super critical Re range and in the detailed mechanism causing the knuckle effect. Discussion will also refers to knuckle balls of baseball and volleyball.