Acceleration of the iterative solver in the discrete dipole approximation: Application to the orientation variation of irregularly shaped particles
- 作者：Y. Okada ; I. Mann ; I. Sano ; S. Mukai
- 关键词：Light scattering simulation ; Efficient calculation ; Discrete dipole approximation
- 刊名：Journal of Quantitative Spectroscopy and Radiative Transfer
- 出版年：2008
- 期刊代码：70_00224073
- 类别：ch
- 出版时间：May 2008
- 卷：109
- 期：8
- 页码：1461-1473
- 文件大小：541 K
摘要
We have applied a method of reducing the number of iterations required to solve a system of linear equations in the discrete dipole approximation. This method obtains an initial guess of dipole polarization from those with similar particle characteristics (e.g., the size parameter and refractive index) calculated a priori. If the initial guess is closer to the solution, the number of iterations of the linear equation solution becomes smaller than that calculated with an arbitrary initial value.