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Digitale Medien

Efficient higher-order backward characteristics schemes for transient advection (1994)

Yu, T. S. ; Li, C. W.

Chichester : Wiley-Blackwell

International Journal for Numerical Methods in Fluids 19 (1994), S. 997-1012

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Details

ISSN: 0271-2091

Schlagwort(e): Advection ; Method of characteristics ; Finite difference ; Flux limiter ; Engineering ; Engineering General

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Maschinenbau

Notizen: The use of the highest-order ((N - 1)th-order) Lagrangian interpolation Polynomial for the approximation of the exact solution in the backward characteristics scheme with N nodes is inefficient owing to the excessive number of terms in the polynomial. New schemes based on a combination of lower-order polynomials to approximate the exact solution are developed, with the relative weighting of the polynomials determined by Fourier mode analysis. With the addition of a flux limiter and a modified discriminator, the resulting schemes are oscillation-free, highly accurate, efficient and more cost-effective as compared with those schemes using the highest-order Lagrangian polynomial.

Zusätzliches Material: 6 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/fld.1650191104

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