摘要
对烟团扩散的时空分布实验进行了研究与分析;结合程序计算与实验方案,优化了烟团初始条件;运用流体动力学软件,对烟云气团在大气中的扩散进行了数值仿真计算。通过计算,得到了烟云气团在流场中涡旋上升的运动过程及其密度、速度、压力和温度等参数,并对爆炸"蘑菇状"烟团的产生机理和重力条件下因浮力差造成的涡旋运动进行了探讨与分析。
The temporal and spatial distribution of explosion cloud in diffused experiment is analyzed and studied. Cloud diffusion in the atmosphere is simulated by fluid dynamics software. Initial condi- tions of the cloud are optimized by calculation and experimental program. Cloud movement process ris- ing in vortex flow and flow parameters such as density, velocity, temperature and pressure are obtained from the simulation. The formation mechanism of the explosive ＂mushrooms＂ cloud and the vortex movement in gravity caused by different buoyancy force are discussed and analyzed.
出处
《高压物理学报》
CAS
CSCD
北大核心
2013年第2期305-311,共7页
Chinese Journal of High Pressure Physics
关键词
爆炸
烟团扩散
初始条件
仿真
blast
cloud diffusion
initial conditions
simulation
