侧旋球运动规律探讨_应用物理学专业论文范文
发布时间：2015-03-15
来源：人大经济论坛
应用物理学专业论文范文
目 录
中文摘要i
英文摘要ii
目录iii
第一章 绪论 1
1.1 研究背景与意义1
1.2 研究方法与系统描述1
1.3 研究内容概述2
第二章 力学模型 3
2.1 粘滞阻力3
2.2 压差阻力4
2.3 附加作用力4
第三章 运动规律以及偏移轨迹方程6
第四章 偏移距离方程的验证11
第五章 结论12
致谢13
参考文献14
摘 要
本论文提出空气不是超流体，球表面粗糙，旋转时表面空气会随之转动。这样，球在旋转中前进时，旋转方向和前进方向一致的一面，球表面带动的空气的流向和外面空气流向相反，会抵消一部分空气流速，速度变慢，而低速会导致压强增大。另一面是相反的情况，所以压强减小。两个效果叠加在一起，球就会受到法向力，使球的运行轨迹发生弯曲。而且在这个力在一定转速范围之内，与转速成正比。本文依据流体力学的基本原理,分析了“香蕉”球形成的必要条件,根据实际情况的简化建立了香蕉球的动力学模型,由质心运动定理得出了动力学方程,在二级近似下求出了运动学方程，得到了弧线球的运动规律及其横向偏离距离的定量结果。
关键词：香蕉球 侧旋球 流体 力学模型 偏移距离
Abstract
This paper presents the air is not super-fluid, the surface roughness, surface air rotates surged rotation. In this way, the ball in the course of rotation, rotation direction and the direction of the same side, the surface-led air flow and air flow outside the contrary, will offset part of the air flow rate, slows down, and low pressure will lead to increase. Another is the opposite situation, the pressure decreases. Superposition effects of the two together, the ball will be by force, the operation of the ball curved trajectory.Moreover, during the same power to a certain speed range, and speed is proportional. In this paper, based on the basic principles of fluid mechanics, analysis of the "banana" ball formation of the necessary conditions, in accordance with the actual situation of the establishment of a simplified model of the dynamics Xiangjiaoqiu from the center of mass movement theorem that the kinetic equation for the two approximation to the equations of motion by the arc of movement of the ball and its horizontal distance from the quantitative results.
Keywords：banana ball rotary ball fluid mechanical model deflection distance
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