结构/直角切割网格下时域有限体积法在计算电磁中的应用研究

 采用有限体积法直接求解时域麦克斯韦方程组，研究了二维圆柱、翼型和三维球体、立方体、双球体等典型完全导电目标的电磁散射问题。空间离散使用近似黎曼解构建网格通量，并针对二维结构网格、三维自适应直角切割网格分别给出重构方法，时间方向采用二步龙格库塔法。计算与理论、实验或文献结果符合良好。

Study on FVTD Method for CEM Using Structured/Adaptive Cartesian Grids

A finite-volume(FV)method is introduced to solve the time-domain(TD)Maxwell equations with applications to handle scattering problems of several classic perfect electrical conductors including cylinder,airfoil in 2D cases and sphere,cube and dual spheres in 3D cases.Spatial discretization and time integration involved are implemented by adopting approximate Riemann solution and two step Runge-Kutta method respectively.Reconstruction schemes for structured grids in 2D case and adaptive Cartesian grids in 3D case are pre-sented successively.The computational results agree quite well with the theory values,measurement data as well as results from references.