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 equations 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.

提出了一种求解交感爆轰时空多尺度问题的直接数值模拟（DNS）方案。根据物理化学性质，SD过程在数值模拟中分为两个阶段。两个阶段使用了两种不同的网格大小，以提高计算精度和效率。局部水平集方法用于精确跟踪多材料界面，Harten Lax and van Leer Contact (HLLC)方法用于解决局部黎曼问题。基于上述计算方法，选择高演化加权本质非振荡（WENO）方案对控制方程进行空间离散，结合总变差递减（TVD）Runge-Kutta进行时间离散，SD的欧拉码为发达。它解决了可变网格大小和时间步长的两个求解器之间的数据交互，实现了SD的三维并行计算。以作文B为研究对象。分析了不同距离的SD过程。给出了组合物B的传输距离和安全距离。设计了相同条件下的试验来验证数值模拟。数值模拟结果与实验吻合较好，证明了数值方法的准确性和可行性。给出了组合物B的传输距离和安全距离。设计了相同条件下的试验来验证数值模拟。数值模拟结果与实验吻合较好，证明了数值方法的准确性和可行性。给出了组合物B的传输距离和安全距离。设计了相同条件下的试验来验证数值模拟。数值模拟结果与实验吻合较好，证明了数值方法的准确性和可行性。