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典型文献

Numerical simulation study of sympathetic detonation in stages

文献摘要：

A Direct Numerical Simulation(DNS)scheme for solving the temporal-spatial multiscale problem of sympathetic detonation is proposed.According to the physical and chemical properties,the SD process is divided into two stages in the numerical simulation.Two different grid sizes are used in the two stages to improve calculation accuracy and efficiency.The local Level Set Method is used to accurately track the multi-material interface,and the Harten Lax and van Leer Contact(HLLC)method is used to solve local Riemann problem.Based on the computing method mentioned above,choosing the high evolution Weighted Essentially Non-Oscillatory(WENO)scheme for the spatial discretization of governing equa-tions in alliance with Total Variation Diminishing(TVD)Runge-Kutta for time discretization,the Eulerian code of SD is developed.It solves the data interaction between the two solvers with variable grid size and time step,and realizes the three-dimensional parallel computing of SD.Composition B is taken as the research object.The processes of SD in different stand-off distances are analyzed.The transmission and safety distances of Composition B are given.The test under the same conditions is designed to verify the numerical simulation.The numerical simulation results are in good agreement with the experiment,which proves the accuracy and feasibility of the numerical method.

文献关键词：

中图分类号：

[1] 医药、卫生（R） / 基础医学（R3） / 病理学（R36） / 病理过程（R364）

[2] 数理科学和化学（O） / 力学（O3） / 振动理论（O32） / 非线性振动（O322）

[3] 医药、卫生（R） / 药学（R9） / 药理学（R96） / 实验药理学（R965）

作者姓名：

Tong-hui Yang;Cheng Wang;Tao Li

作者机构：

State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing,100081,China

文献出处：

防务技术

引用格式：

[1]Tong-hui Yang;Cheng Wang;Tao Li-.Numerical simulation study of sympathetic detonation in stages)[J].防务技术,2022(08):1382-1393

A类：

Harten,Diminishing

B类：

Numerical,simulation,study,sympathetic,detonation,stages,Direct,Simulation,DNS,scheme,solving,temporal,spatial,multiscale,problem,proposed,According,physical,chemical,properties,divided,into,two,numerical,Two,different,grid,sizes,are,used,improve,calculation,accuracy,efficiency,local,Level,Set,Method,accurately,track,material,interface,Lax,van,Leer,Contact,HLLC,method,Riemann,Based,computing,mentioned,above,choosing,high,evolution,Weighted,Essentially,Non,Oscillatory,WENO,discretization,governing,equa,alliance,Total,Variation,TVD,Runge,Kutta,Eulerian,code,developed,It,solves,data,interaction,between,solvers,variable,step,realizes,three,dimensional,parallel,Composition,taken,research,object,processes,stand,off,distances,analyzed,transmission,safety,given,test,under,same,conditions,designed,verify,results,good,agreement,experiment,which,proves,feasibility

AB值：

0.606351

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