Analysis of the Scattering Properties of Aggregate with Random-sized Particles in Smoke Screen

doi:10.3969/j.issn.1000-1093.2020.05.017

Abstract

Abstract: The optimization of extinction performance of particles in smoke screen is studied based on the phenomenon of particle agglomeration in smoke screen. Based on the theory of cluster-cluster aggregation (CCA), the algorithm program of aggregates with random particle size is established to generate the aggregates composed of different sized particles. On the basis of this model, multi-sphere T matrix (MSTM) method is used to calculate and analyze the scattering properties of the aggregates, of which monomer size follows a lognormal distribution of particles in the smoke screen. The results show that the extinction performance of the aggregate is weakened with the increase in particle size dispersion. In the simulated multi-group aggregate particles, the extinction factor of type A aggregate is increased by 30.9% compared with that of type B aggregate, and the overall scattering energy is decreased by 32.5%. The extinction performance of the aggregate in smoke screen can be effectively improved by avoiding an extremely large size monomer particle which size deviates from the mean of lognormal distribution of particles in the aggregates. Key

Key words: smokescreen, aggregateparticle, scatteringproperty, multi-sphereTmatrix, phasefunction

CLC Number:

ZHOU Mengde， LI Jiayu. Analysis of the Scattering Properties of Aggregate with Random-sized Particles in Smoke Screen[J]. Acta Armamentarii, 2020, 41(5): 975-983.

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第41卷第5期2020 年5月
兵工学报ACTA ARMAMENTARII
Vol.41No.5May2020

[1]	ZENG Zhaokai, ZHU Dongsheng, GUO Xiaodi, WANG Ding, GAO Xiaohui. Research on Anti-aircraft Smoke Equipment Position Disposition Model Based on Infrared Shielding [J]. Acta Armamentarii, 2019, 40(6): 1244-1251.
[2]	GAO Wei. Study on Evaluation of Smokescreen Jamming Effectiveness [J]. Acta Armamentarii, 2006, 27(4): 681-684.
[3]	Li Yi, Pan Gongpei, Zhou Zunning. A Study on the Extinction Properties of Cluster Particles in Smokescreen [J]. Acta Armamentarii, 2002, 23(2): 184-187.