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This article is cited in 1 scientific paper (total in 1 paper)
On the accuracy of the discontinuous Galerkin method in calculation of shock waves
M. E. Ladonkinaa, O. A. Neklyudovab, V. V. Ostapenkoc, V. F. Tishkinc a Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, Moscow, Russia
b Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
c Novosibirsk State University, Novosibirsk, Russia
Abstract:
The accuracy of the discontinuous Galerkin method of the third-order approximation on smooth solutions in the calculation of discontinuous solutions of a quasilinear hyperbolic system of conservation laws with shock waves propagating with a variable velocity is studied. As an example, the approximation of the system of conservation laws of shallow water theory is considered. On the example of this system, it is shown that, like the TVD and WENO schemes of increased order of approximation on smooth solutions, the discontinuous Galerkin method, despite its high accuracy on smooth solutions and in the localization of shock waves, reduces its order of convergence to the first order in the shock wave influence domain.
Key words:
hyperbolic system of conservation laws, discontinuous Galerkin method, shallow water theory, integral and local convergence order.
DOI:
https://doi.org/10.31857/S004446690002009-0
References:
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English version:
Computational Mathematics and Mathematical Physics, 2018, 58:8, 1344–1353
Bibliographic databases:
UDC:
519.633 Received: 05.03.2018
Citation:
M. E. Ladonkina, O. A. Neklyudova, V. V. Ostapenko, V. F. Tishkin, “On the accuracy of the discontinuous Galerkin method in calculation of shock waves”, Zh. Vychisl. Mat. Mat. Fiz., 58:8 (2018), 148–156; Comput. Math. Math. Phys., 58:8 (2018), 1344–1353
Citation in format AMSBIB
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http://mi.mathnet.ru/eng/zvmmf10770 http://mi.mathnet.ru/eng/zvmmf/v58/i8/p148
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