Absorbing boundary conditions in a fourth-order accurate SH-wave staggered grid finite difference algorithm

• Autorzy: Kumar R. , Narayan J.P.
• Języki publikacji: EN

Abstrakty

EN

This article presents the implementation of two well known absorbing boundary conditions in a fourth-order accurate staggered grid SH-wave finite difference (FD) algorithm with variable grid size, in a very simplified manner. Based on simulated results, it was confirmed that the Clayton and Engquist absorbing boundary condition causes edge-reflections in case of larger angle of incidence of body waves on the model edges. The results of various numerical experiments revealed that the Israeli and Orszag sponge boundary condition is efficient enough to avoid edge-reflections for any angle of incidence of the body. We recommend the use of both the Clayton and Engquist and Israeli and Orszag absorbing boundary conditions simultaneously to avoid any edge-reflections

Słowa kluczowe

EN

finite difference algorithm; fourth-order spatial accuracy; boundary condition; edge-reflections

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2008
• Tom: Vol. 56, no. 4
• Strony: 1090--1108
• Opis fizyczny: Bibliogr. 30 poz.

Twórcy

autor

Kumar R.

autor

Narayan J.P.

• Department of Earthquake Engineering, Indian Institute of Technology, Roorkee, India,

Bibliografia

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