We discuss the use of Padé-Legendre interpolants as an approach for the postprocessing of data contaminated by Gibbs oscillations. A fast interpolation based reconstruction is proposed and its excellent performance illustrated on several problems. Almost non-oscillatory behavior is shown without knowledge of the position of discontinuities. Then we consider the performance for computational data obtained from nontrivial tests, revealing some sensitivity to noisy data. A domain decomposition approach is proposed as a partial resolution to this and illustrated with examples.
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Dedicated to our friend and mentor, Prof David Gottlieb, on the occasion of his 60th birthday
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Hesthaven, J.S., Kaber, S.M. & Lurati, L. Padé-Legendre Interpolants for Gibbs Reconstruction. J Sci Comput 28, 337–359 (2006). https://doi.org/10.1007/s10915-006-9085-9
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DOI: https://doi.org/10.1007/s10915-006-9085-9