| Brown凝并中两个不同直径纳米颗粒的碰撞系数 |
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| 引用本文： | 王玉明,林建忠.Brown凝并中两个不同直径纳米颗粒的碰撞系数[J].应用数学和力学,2011,32(8). |
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| 作者姓名： | 王玉明 林建忠 |
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| 作者单位： | 1. 中国计量学院流动检测与仿真研究所,杭州,310018
2. 中国计量学院流动检测与仿真研究所,杭州310018;浙江大学流体传动及控制国家重点实验室,杭州310027 |
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| 基金项目： | 国家自然科学基金资助项目(10632070) |
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| 摘 要： | 对Brown凝并中两个不同直径纳米颗粒的碰撞系数进行了研究,通过求解碰撞方程,获得了在van der Waals力和弹性变形力作用下,直径为100 nm至750 nm的邻苯二甲酸二辛酯纳米颗粒的碰撞系数.发现碰撞系数总体上随着颗粒直径和2个颗粒半径比的增加而减小;当颗粒直径为550 nm时,碰撞系数有一个突然的增加.最后给出了具有不同直径2个纳米颗粒碰撞系数的新表达式.
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| 关 键 词： | 纳米颗粒 Brown凝并 碰撞系数 不同直径 van der Waals力 弹性力 |
Collision Efficiency of Two Nanoparticles With Different Diameters in the Brownian Coagulation |
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| WANG Yu-ming,LIN Jian-zhong.Collision Efficiency of Two Nanoparticles With Different Diameters in the Brownian Coagulation[J].Applied Mathematics and Mechanics,2011,32(8). |
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| Authors: | WANG Yu-ming LIN Jian-zhong |
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| Institution: | WANG Yu-ming1,LIN Jian-zhong1,2(1.Institute of Fluid Measurement and Simulation,China Jiliang University,Hangzhou 310018,P.R.China,2.State Key Laboratory of Fluid Power Transmission and Control,Zhejiang University,Hangzhou 310027,P.R.China) |
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| Abstract: | Collision efficiency of two nanoparticles with different diameters in the Brownian coagulation was investigated.The collision equations were solved to obtain the collision efficiency for the dioctyl phthalate nanoparticle with diameter changing from 100 nm to 750 nm in the presence of van der Waals force and elastic deformation force.It is found that the collision efficiency decreases as a whole with the increase of both the particle diameter and radius ratio of two particles.There exists an abrupt increase... |
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| Keywords: | nanoparticles Brownian coagulation collision efficiency different diameter van der Waals force elastic force |
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