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Accurate numerical prediction of acoustic wave propagation. (English) Zbl 1290.65082

Summary: In the marine engineering field, a sound wave is often utilized to visualize objects. In such a sensing method, an accurate numerical prediction of sound propagation is an important issue for theoretical considerations. Recently, a finite difference method in time domain (FDTD) is often applied to wave propagation. However, an existing FDTD sometimes fails to match the accuracy to be required. In the present paper, strategies to improve conventional methods are presented: the application of the compact finite difference on staggered grid with adjusted coefficients and the usage of optimized multistep time integration. It is shown that through these tactics, a highly accurate simulation is attainable.

MSC:

65M06 Finite difference methods for initial value and initial-boundary value problems involving PDEs
76Q05 Hydro- and aero-acoustics
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References:

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