| 高尔夫球绕流流场数值研究 |
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| 引用本文： | 蔡明,崔小朝,汪靓,李冰,聂世谦.高尔夫球绕流流场数值研究[J].力学与实践,2011,33(3):63-66. |
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| 作者姓名： | 蔡明 崔小朝 汪靓 李冰 聂世谦 |
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| 作者单位： | 1. 太原科技大学;2. 太原科技大学工程力学系; |
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| 摘 要： | 采用基于Smagorinsky-Lilly亚格子模型的大涡模拟方法模拟了
一个直径为42.6 mm, 布有均匀凹坑的高尔夫球的绕流流场, 证实了其尾涡分离点比光滑球的
分离点远, 其绕流阻力较小. 模拟了自转速度为100 rad/s的正旋和逆旋的高尔夫球, 发现它
们的尾流分布更不均匀, 并因此产生了垂直于来流方向的压力, 压力大小不受自转方向的影
响; 并发现带有旋转效应的凹坑高尔夫球受到的阻力系数增大; 自旋对于球的上下面压力有
明显影响.
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| 关 键 词： | 绕流 大涡模拟 绕流阻力 垂直压力 |
| 收稿时间： | 2010-11-10 |
NUMERICAL STUDY OF UNIFORM FLOW OVER GOLF BALL |
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| CAI Ming
,
CUI Xiaochao
,
WANG Liang
,
LI Bing
,
NIE Shiqian.NUMERICAL STUDY OF UNIFORM FLOW OVER GOLF BALL[J].Mechanics and Engineering,2011,33(3):63-66. |
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| Authors: | CAI Ming CUI Xiaochao WANG Liang LI Bing NIE Shiqian |
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| Institution: | CAI Ming CUI Xiaochao WANG Liang~(1)) LI Bing NIE Shiqian (Department of Engineering Mechanics,Taiyuan University of Science and Technology,Taiyuan 030024,China) |
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| Abstract: | The numerical simulation of uniform flow past a golf
ball with diameter of 42.6\,mm and with
well-distributed pits is carried out by using the large eddy simulation
(LES) method, based on the
Smagorinsky---Lilly subgrid scale model. The results show that the
detached point of the ball's wake is farther than that for a ball of smooth
sphere and the
drag on the golf ball is smaller. Consider the uniform
flow past a golf ball with the effect of clockwise and anticlockwise
rotations with a
speed of 100\,rad/s. The results show that the wake structure is more
uneven, which would result in the pressure perpendicular to the flow
direction. The magnitude
of pressure has nothing to do with the direction of the rotation and
the drag coefficient is larger than that of a non-rotation golf ball.
Rotation has an important influence on the pressure. |
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| Keywords: | uniform flow LES drag of uniform flow perpendicular pressure |
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