| 空气微粒的阻力系数计算及动力学行为分析 |
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| 引用本文： | 李武钢.空气微粒的阻力系数计算及动力学行为分析[J].桂林工学院学报,2011(2):314-318. |
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| 作者姓名： | 李武钢 |
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| 作者单位： | 广西师范学院物理与电子工程学院; |
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| 摘 要： | 摘要：空气中有着大量尺度为10^-7-10^-5m的微小物体颗粒，影响着空气环境的质量，为了研究其力学行为，对微粒建立了刚性的表面光滑的圆球体模型，运用碰撞理论和热力学统计理论进行严格推导，得到微粒在空气中运动的阻力系数，以及微粒受到的空气阻力总是与微粒运动速度的一次方成正比的结论。以微粒的落体运动为例，对其动力学行为进行数值分析发现：当微粒的体积很小时，飘落到地面上所需的时间将会很长；如果空气温度增加，微粒飘落到地面的时间也会较长。
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| 关 键 词： | 空气环境 微粒 气体分子 空气阻力系数 落体运动 |
Air Resistance Coefficient Calculation and Analysis for Mote Dynamic Behavior in the Air |
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| LI Wu-gang.Air Resistance Coefficient Calculation and Analysis for Mote Dynamic Behavior in the Air[J].Journal of Guilin University of Technology,2011(2):314-318. |
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| Authors: | LI Wu-gang |
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| Affiliation: | LI Wu-gang(College of Physics and Electronics Engineering,Guangxi Teachers Education University,Nanning 530023,China) |
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| Abstract: | In the air,there are large numbers of small-scale object pellets,with 10-7-10-5 in size,affecting air environment.In the research of mote dynamic behavior,the mote model is established as a rigid small ball of smooth surface.The friction coefficient of a mote in the air got through rigorous derivation by the theory of collision and thermodynamics statistics.It is concluded that the air resistance of a mote is always proportional with first power of its velocity.The analysis of dynamic behavior is made as a ... |
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| Keywords: | air environment mote gas molecular the resistance coefficient of air falling body movement |
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