We deal with a numerical solution of the (nonlinear hyperbolic) system of the Euler equations, which describe a motion of inviscid compressible flow. We present a higher order numerical scheme with respect to the space as well as time coordinates. This scheme is based on the discontinuous Galerkin method for the space semi-discretization and the backward difference formula for the time discretization. We employ a suitable linearization of inviscid fluxes and an explicit extrapolation in nonlinear terms, which preserve a high order of accuracy and lead to a linear algebraic problem at each time step. Moreover, we discuss a use of non-reflecting boundary conditions at inflow/outflow parts of boundary and present a stabilization technique that avoid spurious oscillations of numerical solution in vicinity of shock waves. Finally, two numerical examples of unsteady compressible flow demonstrating an efficiency of the scheme are presented.
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Dolejší, V. (2008). Higher Order Numerical Schemes for Hyperbolic Systems with an Application in Fluid Dynamics. In: Benzoni-Gavage, S., Serre, D. (eds) Hyperbolic Problems: Theory, Numerics, Applications. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-75712-2_6
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DOI: https://doi.org/10.1007/978-3-540-75712-2_6
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