Hybrid-Cubic-Rational Semi-Lagrangian Method with the Optimal Mixing

Details Hybrid-Cubic-Rational Semi-Lagrangian Method with the Optimal Mixing Hybrid-Cubic-Rational Semi-Lagrangian Method with the Optimal Mixing

2001-07-04

arxiv.org/abs/math/0107025v1

Computational Fluid Dynamics JOURNAL, vol. 10, no. 2 (2001) pp.159-168

Mathematics

Numerical Analysis

9 pages, 9 figures, Latex, Revtex3, Submitted to Computational Fluid Dynamics Journal on February 9

Scientific paper

A semi-Lagrangian method for advection equation with hybrid cubic-rational interpolation is introduced. In the present method, the spatial profile of physical quantities is interpolated with a combination of a cubic and a rational function. For achieving both high accuracy and convexity preserving of solution, the two functions are mixed in the optimal ratio which is given theoretically. Accuracy and validity of this method is demonstrated with some numerical experiments.

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