On the selection of measure-valued solutions for the isentropic Euler system
Gallenmueller D, Wiedemann E (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 271
Pages Range: 979-1006
DOI: 10.1016/j.jde.2020.09.028
Abstract
Measure-valued solutions to fluid equations arise naturally, for instance as vanishing viscosity limits, yet exhibit non-uniqueness to a vast extent. In this paper, we show that some measure-valued solutions to the two-dimensional isentropic compressible Euler equations, although they are energy admissible, can be discarded as unphysical, as they do not arise as vanishing viscosity limits. In fact, these measure-valued solutions also do not arise from a sequence of weak solutions of the Euler equations, in contrast to the incompressible case. Such a phenomenon has already been observed by Chiodaroli, Feireisl, Kreml, and Wiedemann using an A-free rigidity argument, but only for non-deterministic initial datum. We develop their rigidity result to the case of non-constant states and combine this with a compression wave solution evolving into infinitely many weak solutions, constructed by Chiodaroli, De Lellis, and Kreml. Hereby, we show that there exist infinitely many generalized measure-valued solutions to the two-dimensional isentropic Euler system with quadratic pressure law, which behave deterministically up to a certain time and which cannot be generated by weak solutions with bounded energy or by vanishing viscosity sequences.
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Germany (DE)How to cite
APA:
Gallenmueller, D., & Wiedemann, E. (2021). On the selection of measure-valued solutions for the isentropic Euler system. Journal of Differential Equations, 271, 979-1006. https://dx.doi.org/10.1016/j.jde.2020.09.028
MLA:
Gallenmueller, Dennis, and Emil Wiedemann. "On the selection of measure-valued solutions for the isentropic Euler system." Journal of Differential Equations 271 (2021): 979-1006.
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