摘要
根据爆炸力学、爆炸动力学和热力学理论,建立了瓦斯爆炸流场三维动态数学模型.通过实验和理论分析,研究了动态模型边界条件的确定方法,并采用TVD格式数值方法对三维数学模型进行了数值解析.数值分析结果表明,当燃烧区压力大到趋于爆轰状态时,爆炸及其影响区域障碍物附近的压力上升显著,速度场发生显著变化,燃烧区及非燃烧区均有障碍物的激励效应存在.
A 3-D dynamic mathematical model of gas explosion flow field was built based on explosion mechanics, explosion dynamic mechanics and thermodynamics. The way of boundary conditions defining was studied by experiment and theory analysis, and the total variation diminishing （TVD） was used to numerically solve the mathematical model. Numerical simulation results show that barricade excitation will be formed in combustion and other areas while the pressure is increased to detonation, and the fields of pressure and velocity around the barricade is greatly changed in the whole area of explosion.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2006年第10期907-911,916,共6页
Journal of University of Science and Technology Beijing
基金
国家重点基础研究发展计划(973)资助项目(No.2005CB221506)
关键词
瓦斯爆炸
流场
掘进巷道
TVD格式
数值分析
gas explosion
flow field
excavation roadway
total variation diminishing
numerical analysis
