×

zbMATH — the first resource for mathematics

Numerical methods for gasdynamic systems on unstructured meshes. (English) Zbl 0969.76040
Kröner, Dietmar (ed.) et al., An introduction to recent developments in theory and numerics for conservation laws. Proceedings of the international school, Freiburg/ Littenweiler, Germany, October 20-24, 1997. Berlin: Springer. Lect. Notes Comput. Sci. Eng. 5, 195-285 (1999).
Summary: This article considers stabilized finite element and finite volume discretization techniques for systems of conservation laws. Using newly developed techniques in entropy symmetrization theory, simplified forms of the Galerkin least-squares (GLS) and the discontinuous Galerkin (DG) finite element method are developed and analyzed. The use of symmetrization variables yields numerical schemes which inherit global entropy stability properties of the PDE system. Detailed consideration is given to symmetrization of the Euler, Navier-Stokes, and magnetohydrodynamic equations. Numerous calculations are presented to evaluate the spatial accuracy and feature resolution capability of the simplified DG and GLS discretizations.
Next, upwind finite volume methods are reviewed. Specifically considered are generalizations of Godunov’s method to high order accuracy and unstructured meshes. An important component of high order accurate Godunov methods is the spatial reconstruction operator. A number of reconstruction operators are reviewed based on Green-Gauss formulas as well as least-squares approximation. Several theoretical results using maximum principle analysis are presented for the upwind finite volume method. To assess the performance of the upwind finite volume technique, we provide various numerical calculations in computational fluid dynamics.
For the entire collection see [Zbl 0904.00045].

MSC:
76M10 Finite element methods applied to problems in fluid mechanics
76M12 Finite volume methods applied to problems in fluid mechanics
76N15 Gas dynamics (general theory)
76W05 Magnetohydrodynamics and electrohydrodynamics
76-02 Research exposition (monographs, survey articles) pertaining to fluid mechanics
PDF BibTeX XML Cite