| 流场中碳纳米管的定向行为 | |
| 董若宇 ; 曹炳阳 ; DONG Ruo-Yu ; CAO Bing-Yang | |
| 2016-03-30 ; 2016-03-30 | |
| 关键词 | 定向性 剪切流动 碳纳米管 分子动力学模拟 orientation shear flow carbon nanotube molecular dynamics TB383.1 |
| 其他题名 | Orientational Behaviors of a Carbon Nanotube in Shear Flow |
| 中文摘要 | 本文使用分子动力学模拟方法,研究了单根碳纳米管在线性剪切流场中的定向行为,选用Lennard-Jones势能函数描述的氩作为流体介质。发现碳纳米管偏向沿与流动方向呈一个微小夹角的方向取向,可以由此定义三种随时间变化的定向行为,分别定义为"完全定向"(碳纳米管在一个取向附近微小摆动)、"间断定向"(碳纳米管在完全定向中的摆动会不时被360°转动打断)以及"无法定向"(碳纳米管的运动以360°转动为主).研究发现,碳纳米管的定向行为取决于流体剪切率、密度、温度和碳纳米管管长、管径等因素。; Orientation of a carbon nanotube in fluid under linear shear flow is investigated by molecular dynamics simulations.Argon,described by Lennard-Jones potential,is selected as the surrounding fluid.The nanotube prefers to orient itself around the flow direction with a small angle.Three forms of time-varying orientational behaviors are observed:(i) "Perfect orientation"(the nanotube oscillates around a particular direction);(ii) "Interrupted orientation"(the oscillation is interrupted by a 360�rotation now and then);(iii) "Failed orientation"(the 360�rotations dominate).The shear rate,density and temperature of fluid,length and diameter of nanotube determine the orientational behaviors. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/143667]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 董若宇,曹炳阳,DONG Ruo-Yu,等. 流场中碳纳米管的定向行为[J],2016, 2016. |
| APA | 董若宇,曹炳阳,DONG Ruo-Yu,&CAO Bing-Yang.(2016).流场中碳纳米管的定向行为.. |
| MLA | 董若宇,et al."流场中碳纳米管的定向行为".(2016). |
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