Numerical Simulation of Dust Concentration Distribution in Confined Space

被引：0

作者：

Xu C. ^{[1
]}

Zhang H. ^{[1
]}

Zha B. ^{[1
]}

Zheng Z. ^{[1
]}

Chen J. ^{[2
]}

机构：

[1] Ministerial Key Laboratory of ZNDY, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu

[2] School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu

来源：

Zhang, He (hezhangz@njust.edu.cn) | 1600年 / China Ordnance Industry Corporation卷 / 41期

关键词：

Confined space; Dust concentration distribution; Dust laboratory; Gas-solid two-phase flow; Laser fuze; Numerical simulation;

D O I：

10.3969/j.issn.1000-1093.2020.03.023

中图分类号：

学科分类号：

摘要：

A dust laboratory design scheme is presented for the research on the anti-dust interference ability of laser fuze. An adjustable dust test plane with uniform concentration is formed under laboratory conditions, and then the anti-dust interference ability of laser fuze is quantitatively analyzed. The k-ε turbulent mathematical model and the discrete phase model (DPM) is established, and the dust laboratory is numerically simulated by computatinal fluid dynamcs FLUENT software based on the semi-implicit method of pressure linked equations (SIMPLE) with hybrid difference scheme and co-located grid. The distributions of dust concentration in different cross sections of the computing domain and the trend of concentration over time can be obtained through simulation. The results indicate that the uniform concentration of dust is affected by the wind velocity of the wind inlet and the mass flow rate of the feed inlet, and the uniform concentration grows linearly with the wind velocity while decays exponentially with the flow rate. And the natural wind can speed up the sedimentation speed of dust. © 2020, Editorial Board of Acta Armamentarii. All right reserved.

引用

页码：618 / 624

页数：6

共 18 条

[11] Chen H.M., Feng X.T., Wang F.J., Et al., Numerical simulation on concentration distribution characteristics of dust from tank moving, Acta Armamentarii, 39, 2, pp. 276-282, (2018)
[12] Yao Y., Wang H.Q., Hu Q., Et al., The air attenuation of laser transmission in sand-dust weather, Proceedings of the 16th International Conference on Optical Communications and Networks, pp. 604-606, (2017)
[13] Wang Y.N., Wang X.W., Chen K.J., Et al., Environmental sand and dust extremes for armored vehicles: GJB282.3-91, (1991)
[14] Lu J.H., Liu S.S., Yin W.L., Et al., Requirements for sand and dust control of military helicopters: GJB 1171-91, (1991)
[15] Tan Y.F., Dong G.Y., Tan H.G., Et al., Numerical simulation of rotary self-cleaning air pre-filter based on CFD, Acta Armamentarii, 35, 3, pp. 409-414, (2014)
[16] Ma F.Y., Numerical simulation of wind-blown sand movement around the highway by using discrete phase model, (2015)
[17] Liu X.J., Shi L., Xu X.C., Activities of dense particle-gas two-phase flow modeling in Eulerian-Lagrangian approach, Chinese Journal of Computational Mechanics, 24, 2, pp. 166-172, (2007)
[18] Guo J., Zhang H., Wang X.F., Attenuation and transmission of laser radiation at 532 nm and 1064 nm through rain, Acta Optica Sinica, 31, 1, pp. 32-38, (2011)

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