Absorbing boundary conditions for the numerical simulation of waves

Mathematics of Computation - Tập 31 Số 139 - Trang 629-651
Björn Engquist1, Andrew J. Majda2
1 Uppsala University
2Center for Prototype Climate Modeling

Tóm tắt

In practical calculations, it is often essential to introduce artificial boundaries to limit the area of computation. Here we develop a systematic method for obtaining a hierarchy of local boundary conditions at these artificial boundaries. These boundary conditions not only guarantee stable difference approximations but also minimize the (unphysical) artificial reflections which occur at the boundaries.

Từ khóa


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