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Accuracy and stability analysis of numerical schemes for the shallow water model
Author(s) -
Kwok YueKuen
Publication year - 1996
Publication title -
numerical methods for partial differential equations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.901
H-Index - 61
eISSN - 1098-2426
pISSN - 0749-159X
DOI - 10.1002/(sici)1098-2426(199601)12:1<85::aid-num5>3.0.co;2-j
Subject(s) - von neumann stability analysis , stability (learning theory) , mathematics , polynomial , waves and shallow water , shallow water equations , numerical analysis , mathematical analysis , numerical stability , computer science , geology , oceanography , machine learning
The accuracy and stability properties of several two‐level and three‐level difference schemes for solving the shallow water model are analyzed by the linearized Fourier Method. The effects of explicit or implicit treatments of the gravity, Coriolis, convective and friction terms on accuracy and stability are examined. The use of Miller's properties on von Neumann polynomial plays a crucial role to resolve the tedious mathematical procedures in the Fourier analysis. As a best compromise between efficiency and stability, we recommend the semi‐implicit schemes, where the surface elevation and friction terms are treated implicitly while the convective and Coriolis terms are treated explicitly. © 1996 John Wiley & Sons, Inc.