Explicit and Unconditionally Stable FDTD Method for Electromagnetic Problem Analysis
The Finite-Difference Time-Domain(FDTD)method has an important role in computational electromagnetics due to its advantages of simplicity,high efficiency,and parallelism.However,the traditional FDTD method must satisfy the CFL condition to guarantee the stability of the solution.Because of the limitation of CFL conditions,when the traditional FDTD method deals with electromagnetic problems with multi-scale structures,the time step size must be selected based on the smallest spatial grid size,and the calculation is inefficient.In this paper,an unconditionally stable FDTD method is introduced.This method takes a rectangular patch as the basic unit of space and eliminates the spatially unstable module as its basic idea.It not only retains the advantages of the traditional FDTD methods explicit iteration,but also overcomes the shortcomings associated with the time step and space step of traditional FDTD method,this method has explicit unconditional stability characteristics.
unconditionally stable explicit marching FDTD
Xinbo He Bing Wei Shitian Zhang Kaihang Fan
School of Physics and Optoelectronic Engineering Xidian University Xian,China National Key Laboratory of Electromagnetic Environment China Research Institute of Radiowave Propaga
国际会议
杭州
英文
1-4
2018-12-03（万方平台首次上网日期，不代表论文的发表时间）