[HTML][HTML] Onsager's conjecture for subgrid scale α-models of turbulence

DW Boutros, ES Titi - Physica D: Nonlinear Phenomena, 2023 - Elsevier
The first half of Onsager's conjecture states that the Euler equations of an ideal
incompressible fluid conserve energy if u (⋅, t)∈ C 0, θ (T 3) with θ> 1 3. In this paper, we …

Onsager's conjecture for the incompressible Euler equations in bounded domains

C Bardos, ES Titi - Archive for Rational Mechanics and Analysis, 2018 - Springer
The goal of this note is to show that, in a bounded domain Ω ⊂ R^ n Ω⊂ R n, with ∂ Ω ∈
C^ 2∂ Ω∈ C 2, any weak solution (u (x, t), p (x, t))(u (x, t), p (x, t)), of the Euler equations of …

Onsager's conjecture with physical boundaries and an application to the vanishing viscosity limit

C Bardos, ES Titi, E Wiedemann - Communications in Mathematical …, 2019 - Springer
We consider the incompressible Euler equations in a bounded domain in three space
dimensions. Recently, the first two authors proved Onsager's conjecture for bounded …

Onsager's conjecture in bounded domains for the conservation of entropy and other companion laws

C Bardos, P Gwiazda… - … of the Royal …, 2019 - royalsocietypublishing.org
We show that weak solutions of general conservation laws in bounded domains conserve
their generalized entropy, and other respective companion laws, if they possess a certain …

Energy conservation for the compressible Euler and Navier–Stokes equations with vacuum

I Akramov, T Dębiec, J Skipper, E Wiedemann - Analysis & PDE, 2020 - msp.org
We consider the compressible isentropic Euler equations on [0, T]× 𝕋 d with a pressure law
p∈ C 1, γ− 1, where 1≤ γ< 2. This includes all physically relevant cases, eg, the …

On the Limit Problem Arising in the Kinetic Derivation of a Cahn–Hilliard Equation

C Elbar, B Perthame, J Skrzeczkowski - Communications in Mathematical …, 2024 - Springer
The non-local degenerate Cahn–Hilliard equation is derived from the Vlasov equation with
long range attraction. We study the local limit as the delocalization parameter converges to …

On the extension of Onsager's conjecture for general conservation laws

C Bardos, P Gwiazda… - Journal of Nonlinear …, 2019 - Springer
The aim of this work is to extend and prove the Onsager conjecture for a class of
conservation laws that possess generalized entropy. One of the main findings of this work is …

On global-in-time weak solutions to the magnetohydrodynamic system of compressible inviscid fluids

E Feireisl, Y Li - Nonlinearity, 2019 - iopscience.iop.org
We consider the motion of an inviscid compressible fluid under the mutual interactions with
magnetic field. We show that the initial value problem is ill-posed in the class of weak …

Energy conservation of the compressible Euler equations and the Navier–Stokes equations via the gradient

Y Ye, P Guo, Y Wang - Nonlinear Analysis, 2023 - Elsevier
In this paper, we derive a sufficient condition kee** energy conservation in terms of the
gradient of the velocity for the weak solutions of the compressible Euler equations for both …

Conservation of energy for the Euler–Korteweg equations

T Dębiec, P Gwiazda, A Świerczewska-Gwiazda… - Calculus of Variations …, 2018 - Springer
In this article we study the principle of energy conservation for the Euler–Korteweg system.
We formulate an Onsager-type sufficient regularity condition for weak solutions of the Euler …