激光起爆数值模拟边界精度对计算结果的影响  

Effect of Boundary Accuracy in Numerical Simulation of Laser Ignition on Calculation Results

作　　者：姚栋[1] 王猛[1] 陈先锋[2] 胡坤伦[1] 

机构地区：[1]安徽理工大学弹药工程与爆炸技术系,淮南232001 [2]武汉理工大学安全科学与工程系,武汉430070

出　　处：《爆破》2015年第2期127-130,共4页Blasting

基　　金：国家自然科学基金资助(批准号:51174153;51374164)

摘　　要：在设计激光精密火工品的过程中,炸药的温度场无法通过精密物理实验直接测量,数值计算结果成为炸药温度场最全面可信的依据。为了研究不同边界精度对数值计算的影响,采用不同边界处理方法,利用Fortran语言进行数值计算,并将数值解和解析解进行比较。分析结果后发现:边界条件的精度不同,计算结果出现显著差异。边界条件与内部精度一致的数值计算结果与理论解析解几乎重合,而更适合用作激光精密火工品的设计依据。In the design of precise laser initiators, the temperature field of explosives cannot be detected directly by precision physical test, so the numerical simulation result became a comprehensive and credible basis for explosive temperature field. In order to study the effect of boundary accuracy in numerical simulation of laser ignition on calcu- lation results, different boundary processing methods were applied by Fortran language. With different numerical cal- culation methods and compared with analytical solutions, the results show that the calculation caused significant differences with different boundary accuracies. When the boundary condition agreed with internal consistent accura- cy, the numerical results fitted theory resolution, which was more suitable for the laser ignition design.

关 键 词：激光点火 数值计算 边界条件 精度 

分 类 号：O383[理学—流体力学]