颗粒碰撞电模型和数值模拟
关键词 颗粒 碰撞 电荷 数值模拟
毕业论文设计说明书外文摘要
Title The electric model and numerical simulation of particle collision
Abstract
There are many different types of particles in nature, these particles under the influence of external factors will beget regular or irregular movement. During the movement of the particles, the particles themselves will change somehow, such as friction and collision are two easy responses. Some physical or chemical reactions will take place during the particle collisions where electrification from one particle transport to another. That process is so-called contact electrification. Many Chinese and foreign scholars have conducted researches and discussion of contact electrification in order to understand the theory or master the process to be applied to life. This article imitated Chinese and foreign scholars' research methods.I calculated the contact area of two particles and the charge transfer of the two particle collisions which is called numerical simulation in the title.Finally,I get the answer of the electrification transportation of two particles which can compare to the result of experiments. Keywords particle, collision, electrification, numerical simulation
目 次
1 引言 1
1.1 研究背景 1
1.2 研究现状 2
1.2.1 颗粒弹塑性碰撞的研究 2
1.2.2 碰撞带电原理的研究 2
1.2.3 国内风沙运动的实验研究 3
1.3 本文的研究内容 4
2 两球碰撞带电量的理论推导 5
2.1两球接触面球冠面积的计算 5
2.2两球碰撞时的电量转移 7
3 计算结果的整理 9
4 未来研究展望 19
结论 18
致谢 19
参考文献 20
1 引言
在人们的周围存在着各式各样不同种类的颗粒，这些颗粒的存在也许被人们所忽视着。然而正是颗粒，这一日程生活中人们习以为常又或者因为其微小的形体而被忽略的存在，偶尔会扮演的悲剧的诱发者，火灾有时候便是带电颗粒的带来的悲剧，机器作业中带静电小颗粒的聚集也时而会影响其正常的作业。然而近年来越来越多的学者开始了对颗粒的研究，其中就包括了对颗粒碰撞过程中的电荷转移的研究。研究颗粒碰撞带电的过程有利于去发现探索利用在自然界中本来就存在的这一神奇过程，从而推动历史的进程。本课题便是专注于颗粒碰撞的电模型以及对这一过程中所出现的数值进行的计算模拟，从而得到结论，以期运用于生活
1.1 研究背景