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Building on the recent work of C. De Lellis and L. Sz\'{e}kelyhidi, we construct global weak solutions to the three-dimensional incompressible Euler equations which are zero outside of a finite time interval and have velocity in the…

Analysis of PDEs · Mathematics 2014-02-17 Philip Isett

Lars Onsager in 1945-1949 made an exact analysis of the high Reynolds-number limit for individual turbulent flow realizations modeled by incompressible Navier-Stokes equations, motivated by experimental observations that dissipation of…

Fluid Dynamics · Physics 2024-04-17 Gregory Eyink

In this paper, we consider the forced incompressible Navier-Stokes equations with vanishing viscosity on the three-dimensional torus. We show that there are (classical) solutions for which the dissipation rate of the kinetic energy is…

Analysis of PDEs · Mathematics 2023-01-25 Elia Bruè , Camillo De Lellis

We show that for any $\gamma < \frac{1}{3}$ there exist H\"{o}lder continuous weak solutions $v \in C^{\gamma}([0,T] \times \mathbb{T}^2)$ of the two-dimensional incompressible Euler equations that strictly dissipate the total kinetic…

Analysis of PDEs · Mathematics 2025-11-18 Lili Du , Xinliang Li , Weikui Ye

The Euler-$\alpha$ equations model the averaged motion of an ideal incompressible fluid when filtering over spatial scales smaller than $\alpha$. We show that there exists $\beta>1$ such that weak solutions to the two and three dimensional…

Analysis of PDEs · Mathematics 2021-11-10 Rajendra Beekie , Matthew Novack

Onsager conjectured that solutions of the incompressible Euler equations possessing a certain degree of roughness do not conserve the kinetic energy. Since, within the physical frame of Onsager's conjecture, the kinetic energy is the only…

Fluid Dynamics · Physics 2015-09-29 Peter Stubbe

We study the dissipation measure arising in the inviscid limit of two-dimensional incompressible fluids. It is proved that the dissipation is Lebesgue in time and, for almost every time, it is absolutely continuous with respect to the…

Analysis of PDEs · Mathematics 2026-05-15 Luigi De Rosa , Jaemin Park

We establish the vanishing viscosity limit of the Navier-Stokes equations to the Euler equations for three-dimensional compressible isentropic flow in the whole space. It is shown that there exists a unique regular solution of compressible…

Analysis of PDEs · Mathematics 2019-06-26 Yongcai Geng , Yachun Li , Shengguo Zhu

We consider energy conservation in a two-dimensional incompressible and inviscid flow through weak solutions of the filtered-Euler equations, which describe a regularized Euler flow based on a spatial filtering. We show that the energy…

Analysis of PDEs · Mathematics 2022-10-05 Takeshi Gotoda

We assert that the solutions to the Cauchy problem of the inviscid vorticity equation remain regular and unique for any smooth initial data of finite energy. However, the primitive formulation of the Euler equations is not well-posed, due…

General Mathematics · Mathematics 2019-04-18 F. Lam

The purpose of this work is twofold. First, we construct probabilistically strong solutions to the three-dimensional Euler equations perturbed by additive noise that are $\mathbb{P}$-almost surely continuous in time, H\"older in space, and…

Analysis of PDEs · Mathematics 2026-03-06 Umberto Pappalettera , Francesco Triggiano

This note addresses the question of energy conservation for the 2D Euler system with an $L^p$-control on vorticity. We provide a direct argument, based on a mollification in physical space, to show that the energy of a weak solution is…

Analysis of PDEs · Mathematics 2015-09-11 A. Cheskidov , M. C. Lopes Filho , H. J. Nussenzveig Lopes , R. Shvydkoy

We consider the 3D Euler equations for incompressible homogeneous fluids and we study the problem of energy conservation for weak solutions in the space-periodic case. First, we prove the energy conservation for a full scale of Besov…

Analysis of PDEs · Mathematics 2023-11-07 Luigi C. Berselli , Stefanos Georgiadis

We investigate dissipative anomalies in a turbulent fluid governed by the compressible Navier-Stokes equation. We follow an exact approach pioneered by Onsager, which we explain as a non-perturbative application of the principle of…

Fluid Dynamics · Physics 2018-02-21 Gregory L. Eyink , Theodore D. Drivas

In this work, we prove the $L^3$-based strong Onsager conjecture for the three-dimensional Euler equations. Our main theorem states that there exist weak solutions which dissipate the total kinetic energy, satisfy the local energy…

Analysis of PDEs · Mathematics 2025-08-06 Vikram Giri , Hyunju Kwon , Matthew Novack

In this paper we deal with the Cauchy problem for the incompressible Euler equations in the three-dimensional periodic setting. We prove non-uniqueness for an $L^2$-dense set of H\"older continuous initial data in the class of H\"older…

Analysis of PDEs · Mathematics 2020-04-02 Sara Daneri , Eris Runa , Laszlo Szekelyhidi

We prove that any sequence of vanishing viscosity Leray-Hopf solutions to the periodic two-dimensional incompressible Navier-Stokes equations does not display anomalous dissipation if the initial vorticity is a measure with positive…

Analysis of PDEs · Mathematics 2025-07-01 Luigi De Rosa , Jaemin Park

For any regularity exponent $\beta<\frac 12$, we construct non-conservative weak solutions to the 3D incompressible Euler equations in the class $C^0_t (H^{\beta} \cap L^{\frac{1}{(1-2\beta)}})$. By interpolation, such solutions belong to…

Analysis of PDEs · Mathematics 2023-06-28 Matthew Novack , Vlad Vicol

The purpose of this note is to present a mathematical evidence of dissipation anomaly in 3D turbulent flows within a general setting for the study of energy cascade in physical scales of 3D incompressible flows recently introduced by the…

Analysis of PDEs · Mathematics 2012-01-19 Radu Dascaliuc , Zoran Grujić

Recently, two of these authors construct dissipative continuous (weak) solutions to the incompressible Euler equations on the three-dimensional torus $\mathbb T^3$. The building blocks in their proof are Beltrami flows, which are inherently…

Analysis of PDEs · Mathematics 2012-05-08 Antoine Choffrut , Camillo De Lellis , László Székelyhidi