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Low Mach number limit for viscous compressible flows

Published online by Cambridge University Press:  15 June 2005

Raphaël Danchin*
Affiliation:
Laboratoire de Mathématiques et Applications, Université Paris 12, 61 avenue du Général de Gaulle, 94010 Créteil Cedex 10, France. danchin@univ-paris12.fr
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Abstract

In this survey paper, we are concerned with the zero Mach number limitfor compressible viscous flows. For the sake of (mathematical) simplicity, we restrict ourselves to the case of barotropicfluids and we assume that the flow evolves in the whole space or satisfies periodic boundary conditions. We focus on the case of ill-prepared data. Hence highly oscillating acoustic waves are likely to propagate through the fluid. We nevertheless statethe convergence to the incompressible Navier-Stokes equations when the Mach number ϵ goes to 0. Besides, it is shown that the global existence for the limit equations entails the global existence for the compressible model with small ϵ. The reader is referred to [R. Danchin, Ann. Sci. Éc. Norm. Sup. (2002)] for the detailed proof in the whole space case, and to [R. Danchin, Am. J. Math.124 (2002) 1153–1219] for the case of periodic boundary conditions.

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