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In this paper we extend and complement some recent results by Chiodaroli, De Lellis and Kreml on the well-posedness issue for weak solutions of the compressible isentropic Euler system in $2$ space dimensions with pressure law…

Analysis of PDEs · Mathematics 2014-08-26 Elisabetta Chiodaroli , Ondřej Kreml

The paper is concerned with the problem of explosive solutions for a class of semilinear stochastic wave equations. The challenging open problem(\cite{CMullR}) which is raised by C.Mueller and G.Richards is included in this problem.We…

Analysis of PDEs · Mathematics 2019-01-03 WeiJun Deng

This article is the continued version of the analytical blowup solutions for 2-dimensional Euler-Poisson equations \cite{Y1}. With extension of the blowup solutions with radial symmetry for the isothermal Euler-Poisson equations in $R^{2}$,…

Solar and Stellar Astrophysics · Physics 2011-07-28 Manwai Yuen

We find a smooth solution of the 2D Euler equation on a bounded domain which exists and is unique in a natural class locally in time, but blows up in finite time in the sense of its vorticity losing continuity. The domain's boundary is…

Analysis of PDEs · Mathematics 2014-06-17 Alexander Kiselev , Andrej Zlatos

In the supercritical range of the polytropic indices $\gamma\in(1,\frac43)$ we show the existence of smooth radially symmetric self-similar solutions to the gravitational Euler-Poisson system. These solutions exhibit gravitational collapse…

Analysis of PDEs · Mathematics 2022-11-30 Yan Guo , Mahir Hadzic , Juhi Jang , Matthew Schrecker

We consider a sequence of blowup solutions of a two dimensional, second order elliptic equation with exponential nonlinearity and singular data. This equation has a rich background in physics and geometry. In a work of…

Analysis of PDEs · Mathematics 2008-10-30 Lei Zhang

A solution to the ultra-relativistic strong explosion problem with a non-power law density gradient is delineated. We consider a blast wave expanding into a density profile falling off as a steep radial power-law with small, spherically…

High Energy Astrophysical Phenomena · Physics 2014-11-20 Yonatan Oren , Re'em Sari

Inspired by the numerical evidence of a potential 3D Euler singularity \cite{luo2014potentially,luo2013potentially-2}, we prove finite time singularity from smooth initial data for the HL model introduced by Hou-Luo in…

Analysis of PDEs · Mathematics 2021-06-15 Jiajie Chen , Thomas Y. Hou , De Huang

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 measurevalued solutions to the two-dimensional isentropic…

Analysis of PDEs · Mathematics 2023-03-14 Dennis Gallenmüller , Emil Wiedemann

In this paper we study cosmological solutions to the Einstein--Euler equations. We first establish the future stability of nonlinear perturbations of a class of homogeneous solutions to the relativistic Euler equations on fixed linearly…

Analysis of PDEs · Mathematics 2024-07-25 David Fajman , Maximilian Ofner , Todd A. Oliynyk , Zoe Wyatt

We considered classical solutions to the initial boundary value problem for non-isentropic compressible Euler equations with damping in multi-dimensions. We obtained global a priori estimates and global existence results of classical…

Analysis of PDEs · Mathematics 2015-06-19 Fuzhou Wu

We consider the parabolic-elliptic Keller-Segel system in spatial dimensions $d\geq3$, which corresponds to the mass supercritical case. Some solutions become singular in finite time, an important example being backward self-similar…

Analysis of PDEs · Mathematics 2024-08-05 Charles Collot , Kaiqiang Zhang

We consider the energy super critical 4 dimensional semilinear heat equation $$\partial_tu=\Delta u+|u|^{p-1}u, \ \ x\in \Bbb R^4, \ \ p>5.$$ Let $\Phi(r)$ be a three dimensional radial self similar solution for the three supercritical…

Analysis of PDEs · Mathematics 2017-09-18 Frank Merle , Pierre Raphael , Jeremie Szeftel

In this paper, we will show the blow-up of smooth solutions to the Cauchy problem for the full compressible Navier-Stokes equations and isentropic compressible Navier-Stokes equations with constant and degenerate viscosities in arbitrary…

Analysis of PDEs · Mathematics 2013-10-15 Quansen Jiu , Yuexun Wang , Zhouping Xin

In this paper, we rigorously prove the existence of self-similar converging shock wave solutions for the non-isentropic Euler equations for $\gamma\in (1,3]$. These solutions are analytic away from the shock interface before collapse, and…

Analysis of PDEs · Mathematics 2023-10-31 Juhi Jang , Jiaqi Liu , Matthew Schrecker

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

The global well-posedness and stability of solutions to the three-dimensional compressible Euler equations with damping is a longstanding open problem. This problem was addressed in \cite{WY, STW} in the isentropic regime (i.e. $\gamma>1$)…

Analysis of PDEs · Mathematics 2025-02-19 Feimin Huang , Houzhi Tang , Shuxing Zhang , Weiyuan Zou

We introduce a damping term for the special relativistic Euler equations in $3$-D and show that the equations reduce to the non-relativistic damped Euler equations in the Newtonian limit. We then write the equations as a symmetric…

General Relativity and Quantum Cosmology · Physics 2015-11-26 Moritz Reintjes

We rigorously construct a family of smooth self-similar solutions to the isentropic gravitational Euler-Poisson system with a polytropic equation of state for polytropic indices lying in the full energy-supercritical range,…

Analysis of PDEs · Mathematics 2025-08-11 Ely Sandine

We prove that Guderley's self-similar imploding shock solution for the compressible Euler equations with ideal--gas law ($\gamma>1$) arises from classical, radially symmetric, shock--free data. For such data prescribed at initial time…

Analysis of PDEs · Mathematics 2025-11-10 Giorgio Cialdea , Steve Shkoller , Vlad Vicol