| 非常密集随机分布球粒子相关散射的数值模拟 |
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| 引用本文： | 杨青,金亚秋.非常密集随机分布球粒子相关散射的数值模拟[J].计算物理,2006,23(4):379-386. |
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| 作者姓名： | 杨青 金亚秋 |
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| 作者单位： | 复旦大学波散射与遥感信息教育部重点实验室,上海,200433;复旦大学波散射与遥感信息教育部重点实验室,上海,200433 |
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| 基金项目： | 科技部科研项目;中国科学院资助项目 |
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| 摘 要： | 讨论非常密集(占空比>0.4)随机分布球粒子的散射.用Monte Carlo方法和随机搅拌产生非常密集随机分布粒子,求解电场体积分方程的解,获得散射、吸收和消光系数及有效介电常数.与现有的准晶体近似、具有相干势的准晶体近似和Maxwell-Garnett混合方程等几种方法作了比较.非常密集随机分布粒子表现出群聚性产生的大粒子散射效应.
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| 关 键 词： | 非常密集 相关散射 Monte Carlo数值方法 |
| 文章编号： | 1001-246X（2006）04-0379-08 |
| 收稿时间： | 2005-04-06 |
| 修稿时间： | 2005-09-06 |
Numerical Simulation of Correlated Scattering by Very Dense Randomly Distributed Spherical Particles |
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| YANG Qing,JIN Ya-Qiu.Numerical Simulation of Correlated Scattering by Very Dense Randomly Distributed Spherical Particles[J].Chinese Journal of Computational Physics,2006,23(4):379-386. |
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| Authors: | YANG Qing JIN Ya-Qiu |
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| Institution: | Key Laboratory of Wave Scattering and Remote Sensing Information(Ministry of Education), Fudan University, Shanghai 200433, China |
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| Abstract: | Correlated scattering of very dense(fractional volume more than 0.4) randomly distributed spherical particles is studied.A Monte Carlo method and a random shuffling process are employed to generate the very dense and randomly distributed particles.With solution of the volumetric integral equation of the electric fields,the scattering,absorption and extinction coefficients,as well as effective permittivity of the very dense and randomly distributed spherical particles are numerically calculated.For a validation purpose,they are compared with other approaches such as QCA,QCA-CP and Maxwell-Garnett mixing formula at lower fractions.It shows that very dense particles demonstrate particles clustering and enhance the scattering of bigger or clustered particles. |
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| Keywords: | very dense correlated scattering Monte Carlo numerical method |
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