摘要
燃料空气炸药（ＦＡＥ）装置在一次点火后，液体燃料在中心装药爆轰驱动下，抛撒在空气中形成燃料空气云，用高速摄影记录了该燃料空气云的形成过程。为达到所要求的气云形状，在对高速摄影照片充分分析的基础上，本文对ＦＡＥ装置的结构设计提出了改进意见。燃料空气云在二次点火后实现爆轰，本文测量了沿地面主力学线的压力时间曲线，用高精度、高分辨率的ＴＶＤ格式与瞬时爆轰模型对燃料空气云爆炸场进行了初步的数值模拟，得到了不同时刻的压力等值线与沿地面的压力分布。结果表明；计算与实验得到的各测点的压力最大值基本相等。
Fuel air cloud was formed by dispersing liquid fUel into air driven by solid explosive detonation after frist ignition took Place in fuel air explosive (FAE) device. This process was recorded by high photogrammetry. Suggestions were prompted to approve the design of device structure in order to achieve required cloud shape after analysis was mace tO photographic films.Fuel air cloud explosion took place after second igniting. Pressure thee history at specified point along the main mechanics line was also obtained. Based on experimental results, homogeneous.instantaneous energy release model and high accuracy. high resolution TVD scheme were used to simulate fuel air cloud explosion field. The density contours and pressure distribution was got along the ground at any given time. The experimental resultS of Peak pressure at specified points on the ground were in good agreement with those corresponding to computational ones.
出处
《实验力学》
CSCD
北大核心
1995年第3期203-209,共7页
Journal of Experimental Mechanics
基金
国家自然科学基金
关键词
燃料空气云爆炸
爆炸场
数值模拟
炸药
fuel air explosion, explosion field, numerical simulation.
