A residual perfectly matched layer for wave propagation in elastic media

• Autorzy: Luo Yuqin , Wang Tao , Li Yongdong , Cai Ji , Wang Ying , Fang Guangyou

Identyfikatory

DOI

10.1007/s11600-023-01145-x

• Języki publikacji: EN

Abstrakty

EN

Absorbing boundary conditions are often utilized to eliminate spurious reflections that arise at the model’s truncation boundaries. The perfectly matched layer (PML) is widely considered to be very efficient artificial boundary condition. A new alternative implementation of the PML is presented. We call this method residual perfectly matched layer (RPML) because it is based on residual calculation between the original equations and the PML formulations. This new approach has the same form as the original governing equations, and the auxiliary differential equation has only one partial derivative with respect to time, which is the simplest compared to other PMLs. Therefore, the RPML shows great advantages of implementation simplicity and computational efficiency over the standard complex stretched coordinate PML. At the same time, the absorption performance is improved by adopting the complex frequency shifted stretching function; the stability of the boundary is enhanced by applying the double damping profile.

Słowa kluczowe

EN

absorbing conditions; perfectly matched layer; seismic wave propagation; residual calculation

PL

warunki pochłaniania; idealnie dopasowana warstwa; propagacja fali sejsmicznej; obliczenia resztkowe

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2024
• Tom: Vol. 72, no. 3
• Strony: 1561--1573
• Opis fizyczny: Bibliogr. 39 poz.

Twórcy

autor

Luo Yuqin

• Guangdong Provincial Key Laboratory of Terahertz Quantum Electromagnetics, GBA Branch of Aerospace Information Research Institute, Chinese Academy of Sciences, Guangzhou 510530, China

autor

Wang Tao

• Guangdong Provincial Key Laboratory of Terahertz Quantum Electromagnetics, GBA Branch of Aerospace Information Research Institute, Chinese Academy of Sciences, Guangzhou 510530, China

autor

Li Yongdong

• Guangdong Provincial Key Laboratory of Terahertz Quantum Electromagnetics, GBA Branch of Aerospace Information Research Institute, Chinese Academy of Sciences, Guangzhou 510530, China

autor

Cai Ji

• Guangdong Provincial Key Laboratory of Terahertz Quantum Electromagnetics, GBA Branch of Aerospace Information Research Institute, Chinese Academy of Sciences, Guangzhou 510530, China

autor

Wang Ying

• Guangdong Provincial Key Laboratory of Terahertz Quantum Electromagnetics, GBA Branch of Aerospace Information Research Institute, Chinese Academy of Sciences, Guangzhou 510530, China

autor

Fang Guangyou

• Guangdong Provincial Key Laboratory of Terahertz Quantum Electromagnetics, GBA Branch of Aerospace Information Research Institute, Chinese Academy of Sciences, Guangzhou 510530, China

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