Papers › Numerical upscaling for wave equations with time-dependent multiscale coefficients
Numerical upscaling for wave equations with time-dependent multiscale coefficients
Bernhard Maier, Barbara Verfürth
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In this paper, we consider the classical wave equation with time-dependent, spatially multiscale coefficients. We propose a fully discrete computational multiscale method in the spirit of the localized orthogonal decomposition in space with a backward Euler scheme in time. We show optimal convergence rates in space and time beyond the assumptions of spatial periodicity or scale separation of the coefficients. Further, we propose an adaptive update strategy for the time-dependent multiscale basis. Numerical experiments illustrate the theoretical results and showcase the practicability of the adaptive update strategy.
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