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一种改进的吸收边界条件

An Improvement of Absorbing Boundary Condition
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摘要 在应用时域有限差分法(FDTD)求解电磁散射问题时,需要引入吸收边界条件来截断计算空间。从一般的平面波动方程出发,经过一系列的理论分析,得出了改进的 Mur 吸收边界条件。经过理论分析和数值计算验证了改进的吸收边界条件具有更高的精度,且只增加了非常少量的计算量和内存。 When electromagnetic scattering equations are solved using finite-difference time-domain techniques in unbounded space,there must be a absorbing boundary condition limiting the domain in which the field is computed, In this paper,we approximate the wave equation to obtain an improvement of absorbing boundary condition.It is more effective both in theoretical analyses and numerical simulations when compared to second order Mur ABC s.As the same time,there is a little increasing for the CPU time and requireme...
作者 彭军 鞠智芹
出处 《弹箭与制导学报》 CSCD 北大核心 2004年第S1期204-206,共3页 Journal of Projectiles,Rockets,Missiles and Guidance
关键词 时域有限差分法 吸收边界条件 finte-difference time-domain absorbing boundary condition
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参考文献5

  • 1J.P.Berenger.A perfectly matched layer for the absorption of electromagnetic wave[].JComputer Plays.1994
  • 2G.Mur.Absorbing boundary condition for the finite difference approximation of the time-domain electromagnetic field equations[].IEEETransEMC.1981
  • 3Yee KS.Numerical solution of initial boundary value problems involving Maxwell equations in isotropic media[].IEEE Transactions on Antennas and Propagation.1966
  • 4Engquist B. and Majda A.Absorbing boundary conditions for the numerical simulation of waves[].Mathematics of Computation.1977
  • 5A Taflove,K R Umashankar.Radar cross section of general three-dimensional scatters[].IEEE Transactions on Electromagnetic Compatibility.1983

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