کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4638877 | 1632024 | 2014 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A dispersion minimizing subgridding finite difference scheme for the Helmholtz equation with PML
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موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
ریاضیات کاربردی
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چکیده انگلیسی
In this paper, we present a dispersion minimizing subgridding finite difference scheme for solving the Helmholtz equation with perfectly matched layer (PML) in the two dimensional domain, which is a second order scheme and pointwise consistent with the equation. Subgrids are used to discretize the computational domain, and a refined choice strategy based on minimizing the numerical dispersion is proposed for choosing weight parameters for transitional nodes. Numerical experiments are given to illustrate that the newly proposed schemes can produce highly accurate seismic modeling results with enhanced efficiency, compared to uniform grids.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational and Applied Mathematics - Volume 267, September 2014, Pages 82–95
Journal: Journal of Computational and Applied Mathematics - Volume 267, September 2014, Pages 82–95
نویسندگان
Tingting Wu, Zhongying Chen,