Summary
A Fourth-order compact implicit finite-difference scheme is applied for solving numerically the nonlinear shallow-water equations in conservation-law form. The algorithm is second-order time accurate, while fourth-order compact differencing is implemented in a spatially factored (ADI) form. Third-order uncentered boundary conditions which preserve the overall fourth-order convergence are experimented with and compared. Von Neuman linearized stability analysis as well as Kreiss-type normal-mode analysis are performed. The integral invariants of the shallow-water equations are well conserved during the numerical integration. Accuracy tests confirm the fourth-order accuracy of the scheme.
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© 1980 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH, Braunschweig
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Navon, I.M. (1980). A Fourth-Order Compact Implicit Scheme for Solving the Non-Linear Shallow-Water Equations in Conservation-Law Form. In: Hirschel, E.H. (eds) Proceedings of the Third GAMM — Conference on Numerical Methods in Fluid Mechanics. Notes on Numerical Fluid Mechanics, vol 2. Vieweg+Teubner Verlag, Wiesbaden. https://doi.org/10.1007/978-3-322-86146-7_22
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DOI: https://doi.org/10.1007/978-3-322-86146-7_22
Publisher Name: Vieweg+Teubner Verlag, Wiesbaden
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