基于有限差分的二维Helmholtz方程外问题快速求解方法
기우유한차분적이유Helmholtz방정외문제쾌속구해방법
A fast iterative method for the two-dimensional exterior Helmholtz equation based on finite difference
  • 万方数据
    桂林电子科技大学学报 계림전자과기대학학보
    JOURNAL OF GUILIN UNIVERSITY OF ELECTRONIC TECHNOLOGY
    2014年 3期 245-248 ,共4页

    莫金衡%李郴良%田苏丽

    막금형%리침량%전소려

    Helmholtz方程%有限差分法%离散傅里叶变换 Helmholtz方程%有限差分法%離散傅裏葉變換
    Helmholtz방정%유한차분법%리산부리협변환
    Helmholtz equation%finite difference method%discrete Fourier transformation
    针对二维 Helmholtz方程外问题，基于有限差分法进行离散，提出一种有效的快速求解方法。通过傅里叶变换和LU分解方法，将离散方程简化为维数较小的界面方程，对界面方程给出了一种有效的预处理共轭梯度法。
    침대이유 Helmholtz방정외문제，기우유한차분법진행리산，제출일충유효적쾌속구해방법。통과부리협변환화LU분해방법，장리산방정간화위유수교소적계면방정，대계면방정급출료일충유효적예처리공액제도법。
    A fast iterative algorithm is proposed for two-dimensional the exterior Helmholtz equation.Finite difference schemes are employed to discretize the exterior Helmholtz equation.A smaller interface discrete system is reduced by the discrete Fourier transformation and LU decomposition.An effective preconditioning conj ugate gradient method is developed to solve the interface equation.
    원문보기 원문다운로드 사이트로이동
저자의 최근 논문