Abstract
The fractal conservation law \(\partial _t u + \partial _x(f(u))+(-\varDelta )^{{\alpha }/2}u=0\) changes characteristics as \({\alpha }\rightarrow 2\) from non-local and weakly diffusive to local and strongly diffusive. In this paper we present a corrected finite difference quadrature method for \((-\varDelta )^{{\alpha }/2}\) with \({\alpha }\in [0,2]\), combined with usual finite volume methods for the hyperbolic term, that automatically adjusts to this change and is uniformly convergent with respect to \({\alpha }\in [\eta ,2]\) for any \(\eta >0\). We provide numerical results which illustrate this asymptotic-preserving property as well as the non-uniformity of previous finite difference or finite volume type of methods.
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Droniou, J., Jakobsen, E.R. (2014). A Uniformly Converging Scheme for Fractal Conservation Laws. In: Fuhrmann, J., Ohlberger, M., Rohde, C. (eds) Finite Volumes for Complex Applications VII-Methods and Theoretical Aspects. Springer Proceedings in Mathematics & Statistics, vol 77. Springer, Cham. https://doi.org/10.1007/978-3-319-05684-5_22
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DOI: https://doi.org/10.1007/978-3-319-05684-5_22
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