Abstract
A linear convection equation with discontinuous coefficients arises in wave propagation through interfaces. An interface condition is needed at the interface to select a unique solution. An upwind scheme that builds this interface condition into its numerical flux is called the immersed interface upwind scheme. An l1-error estimate of such a scheme was first established by Wen et al. (2008). In this paper, we provide a simple analysis on the l 1-error estimate. The main idea is to formulate the solution to the underline initial-value problem into the sum of solutions to two convection equations with constant coefficients, which can then be estimated using classical methods for the initial or boundary value problems.
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Dedicated to Professor Shi Zhong-Ci on the Occasion of his 80th Birthday
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Jin, S., Qi, P. l 1-error estimates on the immersed interface upwind scheme for linear convection equations with piecewise constant coefficients: A simple proof. Sci. China Math. 56, 2773–2782 (2013). https://doi.org/10.1007/s11425-013-4738-2
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DOI: https://doi.org/10.1007/s11425-013-4738-2
Keywords
- l 1-error estimates
- linear convection equation with discontinuous coefficients
- immersed interphase method