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A new convex integration approach for the compressible Euler equations and failure of the local maximal dissipation criterion

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2024

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Nonlinearity. IOP Publishing. 2024, 37(11), 115022. ISSN 0951-7715. eISSN 1361-6544. Verfügbar unter: doi: 10.1088/1361-6544/ad81c8

Zusammenfassung

In this paper we establish a new convex integration approach for the barotropic compressible Euler equations in two space dimensions. In contrast to existing literature, our new method generates not only the momentum for given density, but also the energy and the energy flux. This allows for a simple way to construct admissible solutions, i.e. solutions which satisfy the energy inequality. Moreover using the convex integration method developed in this paper, we show that the local maximal dissipation criterion fails in the following sense: There exist wild solutions which beat the self-similar solution of the one-dimensional Riemann problem extended to two dimensions. Hence the local maximal dissipation criterion rules out the self-similar solution. The convex integration machinery itself is carried out in a very general way. Hence this paper provides a universal framework for convex integration which not even specifies the form of the partial differential equations under consideration. Therefore this general framework is applicable in many different situations.

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ISO 690MARKFELDER, Simon, 2024. A new convex integration approach for the compressible Euler equations and failure of the local maximal dissipation criterion. In: Nonlinearity. IOP Publishing. 2024, 37(11), 115022. ISSN 0951-7715. eISSN 1361-6544. Verfügbar unter: doi: 10.1088/1361-6544/ad81c8
BibTex
@article{Markfelder2024-11-01conve-71085,
  year={2024},
  doi={10.1088/1361-6544/ad81c8},
  title={A new convex integration approach for the compressible Euler equations and failure of the local maximal dissipation criterion},
  number={11},
  volume={37},
  issn={0951-7715},
  journal={Nonlinearity},
  author={Markfelder, Simon},
  note={Article Number: 115022}
}
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