On the Energy Dissipation Rate of Solutions to the Compressible Isentropic Euler System |
| |
Authors: | Elisabetta Chiodaroli Ondrej Kreml |
| |
Institution: | 1. EPFL Lausanne, Station 8, 1015, Lausanne, Switzerland 2. Institut für Mathematik, Universit?t Zürich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
|
| |
Abstract: | In this paper we extend and complement the results in Chiodaroli et al. (Global ill-posedness of the isentropic system of gas dynamics, 2014) on the well-posedness issue for weak solutions of the compressible isentropic Euler system in 2 space dimensions with pressure law p(ρ) = ρ γ , γ ≥ 1. First we show that every Riemann problem whose one-dimensional self-similar solution consists of two shocks admits also infinitely many two-dimensional admissible bounded weak solutions (not containing vacuum) generated by the method of De Lellis and Székelyhidi (Ann Math 170:1417–1436, 2009), (Arch Ration Mech Anal 195:225–260, 2010). Moreover we prove that for some of these Riemann problems and for 1 ≤ γ < 3 such solutions have a greater energy dissipation rate than the self-similar solution emanating from the same Riemann data. We therefore show that the maximal dissipation criterion proposed by Dafermos in (J Diff Equ 14:202–212, 1973) does not favour the classical self-similar solutions. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|