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Optimal Implicit Finite-difference Method for the Scalar Wave Simulation
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 80th EAGE Conference and Exhibition 2018, Jun 2018, Volume 2018, p.1 - 5
Abstract
Summary
The explicit spatial finite-difference (ESFD) method has been widely adopted for the scalar wave simulation. While the implicit stencils can effectively improve the accuracy and stability in numerical modelling compared to the ESFD. In this paper, we calculate the implicit spatial finite-difference (ISFD) coefficients by Taylor-series expansion method (TEM) and least-square method (LSM), respectively. The accuracy analysis and numerical modelling results demonstrate that the proposed LSM-ISFD method can achieve higher accuracy than the conventional TEM-based ISFD scheme.
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