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On 16th and 32th Order Multioperators-Based Schemes for Smooth and Discontinuous Fluid Dynamics Solutions

Published online by Cambridge University Press:  21 June 2017

Andrei I. Tolstykh*
Affiliation:
Dorodnicyn Computing Center, Federal Research Center “Computer Science and Control” of Russian Academy of Sciences, 117999 Moscow GSP-1, Vavilova str. 40, Moscow Institute of Physics and Technology, Russia
*
*Corresponding author. Email address:tol@ccas.ru (A. I. Tolstykh)

Abstract

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The paper presents a novel family of arbitrary high order multioperators approximations for convection, convection-diffusion or the fluid dynamics equations. As particular cases, the 16th- and 32th-order skew-symmetric multioperators for derivatives supplied by the 15th- and 31th-order dissipation multioperators are described. Their spectral properties and the comparative efficiency of the related schemes in the case of smooth solutions are outlined. The ability of the constructed conservative schemes to deal with discontinuous solutions is investigated. Several types of nonlinear hybrid schemes are suggested and tested against benchmark problems.

Information

Type
Research Article
Copyright
Copyright © Global-Science Press 2017