Stability of numerical schemes solving quasilinear wave equations
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- by A. Y. le Roux PDF
- Math. Comp. 36 (1981), 93-105 Request permission
Abstract:
A generalization of the Riemann invariants for quasi-linear wave equations of the type ${\partial ^2}w/\partial {t^2} = \partial f(\partial w/\partial x)/\partial x$, which includes the shock curves, is proposed and is used to solve the Riemann problem. Three numerical schemes, whose accuracy is of order one (the Lax-Friedrichs scheme and two extensions of the upstreaming scheme), are constructed by ${L^2}$-projection, onto piecewise constant functions, of the solutions of a set of Riemann problems. They are stable in the ${L^\infty }$-norm for a class of wave equations, including a nonlinear model of extensible strings, which are not genuinely nonlinear. The problem with boundary conditions is detailed, as is its treatment, by the numerical schemes.References
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Additional Information
- © Copyright 1981 American Mathematical Society
- Journal: Math. Comp. 36 (1981), 93-105
- MSC: Primary 65M10; Secondary 35L67
- DOI: https://doi.org/10.1090/S0025-5718-1981-0595044-X
- MathSciNet review: 595044