Scale-selective Time Integration for Long-Wave Linear Acoustics
作者： Stefan Vater , Rupert Klein , Omar M. Knio
DOI: 10.1007/978-3-642-20671-9_81
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摘要: In this note, we present a new method for the numerical integration of one dimensional linear acoustics with long time steps. It is based on scale-wise decomposition data using standard multigrid ideas and scale-dependent blending basic integrators different principal features. This enables us to accurately compute balanced solutions slowly varying short-wave source terms. At same time, effectively filters freely propagating compressible modes. The selection time guided by their discrete-dispersion relation. Furthermore, ability schemes reproduce shortly investigated. meant be used in semi-implicit finite volume methods weakly flows.
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