中国物理B ›› 2009, Vol. 18 ›› Issue (8): 3431-3437.doi: 10.1088/1674-1056/18/8/050

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Study of MPI based on parallel MOM on PC clusters for EM-beam scattering by 2-D PEC rough surfaces

麻军, 郭立新, 王安琪   

  1. School of Science, Xidian University, Xi'an 710071, China
  • 收稿日期:2008-12-30 修回日期:2009-02-13 出版日期:2009-08-20 发布日期:2009-08-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60571058) and the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No 20070701010).

Study of MPI based on parallel MOM on PC clusters for EM-beam scattering by 2-D PEC rough surfaces

Ma Jun(麻军)†, Guo Li-Xin(郭立新), and Wang An-Qi(王安琪)   

  1. School of Science, Xidian University, Xi'an 710071, China
  • Received:2008-12-30 Revised:2009-02-13 Online:2009-08-20 Published:2009-08-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60571058) and the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No 20070701010).

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摘要： This paper firstly applies the finite impulse response filter (FIR) theory combined with the fast Fourier transform (FFT) method to generate two-dimensional Gaussian rough surface. Using the electric field integral equation (EFIE), it introduces the method of moment (MOM) with RWG vector basis function and Galerkin's method to investigate the electromagnetic beam scattering by a two-dimensional PEC Gaussian rough surface on personal computer (PC) clusters. The details of the parallel conjugate gradient method (CGM) for solving the matrix equation are also presented and the numerical simulations are obtained through the message passing interface (MPI) platform on the PC clusters. It finds significantly that the parallel MOM supplies a novel technique for solving a two-dimensional rough surface electromagnetic-scattering problem. The influences of the root-mean-square height, the correlation length and the polarization on the beam scattering characteristics by two-dimensional PEC Gaussian rough surfaces are finally discussed.

Abstract: This paper firstly applies the finite impulse response filter (FIR) theory combined with the fast Fourier transform (FFT) method to generate two-dimensional Gaussian rough surface. Using the electric field integral equation (EFIE), it introduces the method of moment (MOM) with RWG vector basis function and Galerkin's method to investigate the electromagnetic beam scattering by a two-dimensional PEC Gaussian rough surface on personal computer (PC) clusters. The details of the parallel conjugate gradient method (CGM) for solving the matrix equation are also presented and the numerical simulations are obtained through the message passing interface (MPI) platform on the PC clusters. It finds significantly that the parallel MOM supplies a novel technique for solving a two-dimensional rough surface electromagnetic-scattering problem. The influences of the root-mean-square height, the correlation length and the polarization on the beam scattering characteristics by two-dimensional PEC Gaussian rough surfaces are finally discussed.

Key words: electromagnetic scattering, rough surface, beam, parallel computing

中图分类号:  (Electromagnetic wave propagation; radiowave propagation)

  • 41.20.Jb
02.30.Uu (Integral transforms) 02.60.Cb (Numerical simulation; solution of equations) 02.60.Nm (Integral and integrodifferential equations) 02.70.Dh (Finite-element and Galerkin methods) 78.68.+m (Optical properties of surfaces)