He Haihao, Gu Youlin, Fang Jiajie, Hu Yihua, Cao Hao, Ding Wanying, Wang Xinyu, Chen Xi
National University of Defense Technology, Hefei, 230037, China.
State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology, Hefei, 230037, China.
Heliyon. 2022 Nov 22;8(11):e11818. doi: 10.1016/j.heliyon.2022.e11818. eCollection 2022 Nov.
Comparative studies of different smokescreen designs are essential to determine differences in extinction performance. This study aims to investigate the extinction performance of explosive smokescreen under different conditions, and to provide an evaluation method for the optimal design of its charge structure.
The process of formation of the smokescreen with a cylindrical charge structure is described based on the smoothed particle hydrodynamics method. The blast radius and particle density distribution of the smokescreen were calculated for different charge structures and charge ratios through simulations. Lambert-Beer's law was combined to obtain the infrared extinction area. An analysis was then conducted to determine the influence of the number of baffles in the charge structure and charge ratio on the extinction performance of the smokescreen. Field tests were conducted to verify the simulation results.
Increasing the number of baffles in the projectile structure made the particle distribution of the smokescreen more uniform and resulted in a larger infrared extinction area. An increase in the explosive quantity, made the smokescreen more dispersed. However, too much of the explosives caused the smokescreen to be sparse, reducing the infrared extinction area.
对不同烟幕设计进行比较研究对于确定消光性能差异至关重要。本研究旨在探究不同条件下爆炸式烟幕的消光性能，并为其装药结构的优化设计提供一种评估方法。
基于光滑粒子流体动力学方法描述了具有圆柱形装药结构的烟幕形成过程。通过模拟计算了不同装药结构和装药比下烟幕的爆炸半径和粒子密度分布。结合朗伯-比尔定律得到红外消光面积。然后分析装药结构中隔板数量和装药比对烟幕消光性能的影响。进行现场试验以验证模拟结果。
增加弹体结构中隔板的数量使烟幕的粒子分布更均匀，并导致更大的红外消光面积。炸药量的增加使烟幕更分散。然而，过多的炸药会导致烟幕稀疏，减小红外消光面积。
