Numerical investigation of the shockwave overpressure fields of multi-sources FAE explosions

作     者：Chun-hua Bai Xing-yu Zhao Jian Yao Bin-feng Sun Chun-hua Bai;Xing-yu Zhao;Jian Yao;Bin-feng Sun

作者机构：State Key Laboratory of Explosion Science and TechnologyBeijing Institute of TechnologyBeijing100081China 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2021年第17卷第4期

页      面：1168-1177页

核心收录：

学科分类：11[军事学] 081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0703[理学-化学] 1109[军事学-军事装备学] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：The authors would like to acknowledge the China Postdoctoral Science Foundation(Grant No.2019M660488)to provide fund for this work. 

主　　题：Fuel-air explosive Numerical simulation Multi-sources explosion Shockwave overpressure field 

摘      要：Shockwaves from fuel-air explosive(FAE)cloud explosions may cause significant casualties.The ground overpressure field is usually used to evaluate the damage range of explosion shockwaves.In this paper,a finite element model of multi-sources FAE explosion is established to simulate the process of multiple shockwaves propagation and interaction.The model is verified with the experimental data of a fourfoldsource FAE explosion,with the total fuel mass of 340 kg.Simulation results show that the overpressure fields of multi-sources FAE explosions are different from that of the single-source.In the case of multisources,the overpressure fields are influenced significantly by source scattering distance and source number.Subsequently,damage ranges of overpressure under three different levels are calculated.Within a suitable source scattering distance,the damage range of multi-sources situation is greater than that of the single-source,under the same amount of total fuel mass.This research provides a basis for personnel shockwave protection from multi-sources FAE explosion.