爆炸与冲击2026，Vol.46Issue(6)：68-81,14.DOI:10.11883/bzycj-2025-0270
温压炸药密闭空间内爆炸冲击波与温度场耦合试验研究
Experimental study on the coupling of shock wave and temperature field from a thermobaric explosive in a confined space
摘要
Abstract
In order to investigate the coupled enhancement effects of shock wave and temperature generated by thermobaric explosives in confined spaces,internal explosion experiments were conducted with 100-400 g charges in a confined building space.Pressure sensors and thermocouples were employed to obtain the explosion pressure and temperature data at different locations within the confined space.The experiments revealed the evolution characteristics and propagation patterns of the shock wave and temperature field produced by the thermobaric explosive.The results show that the temperature generated by the internal explosion of the thermobaric explosive exhibits significant secondary heating and prolonged duration characteristics.A decay model for the initial peak temperature based on the scaled distance was established.The TNT equivalence coefficient of the shock wave from the internal explosion of the thermobaric explosive exhibits a concave hyperbolic trend with increasing scaled distance.At a scaled distance of 1.7 m/kg1/3,the TNT equivalence coefficient of the shock wave overpressure reaches a minimum value of 1.43,indicating that this position is the turning point where the energy from aerobic afterburn combustion exerts a significant effect on the peak overpressure.A two-stage prediction model for the peak overpressure was established,describing the contributions of non-ideal detonation and the aerobic afterburn effect of aluminum powder to the shock wave in different regions.Based on the pressure rise caused by the expansion of detonation products and the temperature rise due to afterburn combustion,a quasi-static pressure prediction model for the internal explosion of thermobaric explosives was established.Taking the quasi-static pressure of the 100 g charge as the reference,the quasi-static pressures for the 200,300,and 400 g charges increased to 2.27,3.21,and 4.18 times the reference value,respectively,showing a nonlinear growth under the coupled effect of detonation product expansion and afterburn temperature rise.关键词
温压炸药/密闭空间/冲击波/温度场/准静态压力/当量效应Key words
thermobaric explosive/confined space/shock wave/temperature field/quasi-static pressure/equivalent effect分类
数理科学引用本文复制引用
蒋欣利,张国凯,何勇,吴玉欣,刘举,王振..温压炸药密闭空间内爆炸冲击波与温度场耦合试验研究[J].爆炸与冲击,2026,46(6):68-81,14.基金项目
国家自然科学基金(52278504) （52278504）
江苏省自然科学基金(BK20220141) （BK20220141）
中央高校基本科研业务费专项资金(309231B8805) （309231B8805）
