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A free-Lagrange method for unsteady compressible flow: Simulation of a confined cylindrical blast wave. (English) Zbl 0881.76059

A free-Lagrangian method is described which is based on the Godunov-type solver applied to the Voronoi mesh. To calculate fluxes across cells boundaries, two approximate Riemann solvers are used. The performance of the resulting schemes are tested against the problems of a one-dimensional shock tube and a two-dimensional blast wave confined within a rigid cylinder. The quality of contact resolution is discussed.

MSC:

76M20 Finite difference methods applied to problems in fluid mechanics
76L05 Shock waves and blast waves in fluid mechanics

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