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On the evolution equation of compressible vortex sheets

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  • A. Morando
  • P. Secchi
  • P. Trebeschi

Abstract

We are concerned with supersonic vortex sheets for the Euler equations of compressible inviscid fluids in two space dimensions. For the problem with constant coefficients we derive an evolution equation for the discontinuity front of the vortex sheet. This is a pseudo‐differential equation of order two. In agreement with the classical stability analysis, if the Mach number M satisfies M 2 then the problem is weakly stable, and we are able to derive a wave‐type a priori energy estimate for the solution, with no loss of regularity with respect to the data. Then we prove the well‐posedness of the problem, by showing the existence of the solution in weighted Sobolev spaces.

Suggested Citation

  • A. Morando & P. Secchi & P. Trebeschi, 2020. "On the evolution equation of compressible vortex sheets," Mathematische Nachrichten, Wiley Blackwell, vol. 293(5), pages 945-969, May.
    • Handle: RePEc:bla:mathna:v:293:y:2020:i:5:p:945-969
    DOI: 10.1002/mana.201800162
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