Constructing non-reflecting boundary conditions using summation-by-parts in time

• In this paper we provide a new approach for constructing non-reflecting boundary conditions. The boundary conditions are based on summation-by-parts operators and derived without Laplace transformation in time. We prove that the new non-reflecting boundary conditions yield a well-posed problem and that the corresponding numerical approximation is unconditionally stable. The analysis is demonstrated on a hyperbolic system in two space dimensions, and the theoretical results are confirmed by numerical experiments.

Ämnesord

NATURVETENSKAP  -- Matematik -- Beräkningsmatematik (hsv//swe)

NATURAL SCIENCES  -- Mathematics -- Computational Mathematics (hsv//eng)

Nyckelord

Non-reflecting boundary conditions

Summation-by-parts

Simultaneous approximation terms

Finite differences

Stability

Accuracy

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)