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- W2963862075 abstract "The boundary integral method is an efficient approach for solving time-harmonic obstacle scattering problems from bounded scatterers. This paper presents the directional preconditioner for the linear systems of the boundary integral method in two dimensions. This new preconditioner builds a data-sparse approximation of the integral operator, transforms it into a sparse linear system, and computes an approximate inverse with efficient sparse linear algebra algorithms. This preconditioner is efficient and results in small and almost frequency-independent iteration counts for nonresonant scatterers when combined with standard iterative solvers. Numerical results are provided to demonstrate the effectiveness of the new preconditioner." @default.
- W2963862075 created "2019-07-30" @default.
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- W2963862075 date "2015-01-01" @default.
- W2963862075 modified "2023-09-25" @default.
- W2963862075 title "Directional Preconditioner for 2D High Frequency Obstacle Scattering" @default.
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- W2963862075 doi "https://doi.org/10.1137/140985135" @default.
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