随机取向烟幕凝聚粒子的消光特性

计算物理 ›› 2010, Vol. 27 ›› Issue (4): 593-597.

随机取向烟幕凝聚粒子的消光特性

类成新¹, 吴振森²

1. 山东理工大学理学院, 山东淄博 255049;
2. 西安电子科技大学理学院, 陕西西安 710071

收稿日期:2009-03-24 修回日期:2009-06-21 出版日期:2010-07-25 发布日期:2010-07-25
作者简介:类成新(1976-),男,山东新泰,讲师,硕士,主要从事目标激光散射特性研究,山东省淄博市张店区张周路12号山东理工大学理学院255049.
基金资助:
国家自然科学基金(批准号:60371020)资助项目

Light Extinction of Randomly Oriented Smoke Screen with Clustered Agglomerates

LEI Chengxin¹, WU Zhensen²

1. School of Science, Shandong University of Technology, Zibo 255049, China;
2. School of Science, Xidian Unicersity, Xi'an 710071, China

Received:2009-03-24 Revised:2009-06-21 Online:2010-07-25 Published:2010-07-25

摘要/Abstract

摘要： 采用蒙特卡罗方法根据团簇-团簇凝聚(CCA)模型对由球形原始微粒凝聚而成的烟幕凝聚粒子进行模拟,用离散偶极子近似(DDA)方法研究随机取向烟幕凝聚粒子的消光特性.结果表明,凝聚粒子的消光特性受到原始微粒数量以及粒径的影响,粒子的凝聚将减弱烟幕的消光性能;当凝聚结构中原始微粒的数目一定时,存在使烟幕消光性能达到最大的原始微粒粒径.

关键词: 烟幕, 凝聚粒子, 消光特性, 离散偶极子近似方法

Abstract: Monte Carlo method is used to study light extinction of smoke screen with clustered agglomerates consisting of spherical primary particles in a cluster-cluster aggregation(CCA) model.Extinction factor and absorption factor of randomly oriented smoke screen with clustered agglomerates are calculated with discrete dipole approximation(DDA).It shows that exinction properties are determined by radius and number of primitive particles besides refractive index and extinction properties can be decreased by aggregation.At a given primitive particle number,maximum extinction is obtained with optimum radius of primitive particles.

Key words: smoke screen, cluster particle, extinction properties, discrete dipole approximation method

中图分类号:

TQ567.5

类成新, 吴振森. 随机取向烟幕凝聚粒子的消光特性[J]. 计算物理, 2010, 27(4): 593-597.

LEI Chengxin, WU Zhensen. Light Extinction of Randomly Oriented Smoke Screen with Clustered Agglomerates[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2010, 27(4): 593-597.