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In this paper and the companion paper [EJE2], we establish finite-time singularity formation for finite-energy strong solutions to the axi-symmetric $3D$ Euler equations in the domain $\{(x,y,z)\in\mathbb{R}^3:z^2\leq c(x^2+y^2)\}$ for some…

Analysis of PDEs · Mathematics 2017-12-27 Tarek M. Elgindi , In-Jee Jeong

A fluid-particle model is investigated in the present paper, which consists of the compressible Navier-Stokes equations coupled with the Vlasov equation though a nonlinear drag force. We consider the initial value problem for the…

Analysis of PDEs · Mathematics 2021-09-17 Hai-Liang Li , Ling-Yun Shou

This paper is devoted to the well-posedness theory of piston problem for compressible {combustion} Euler flows with physical ignition condition. A significant combustion phenomena called detonation will occur provided the reactant is…

Analysis of PDEs · Mathematics 2022-03-04 Kai Hu , Jie Kuang

We study the three-dimensional isothermal Euler equations with linear damping and an exterior potential. For sufficiently large damping, we prove global well-posedness for arbitrarily large initial data by combining a parabolic comparison…

Analysis of PDEs · Mathematics 2025-09-30 Young-Pil Choi , Houzhi Tang , Weiyuan Zou

In this work, we consider the interaction of a 3D incompressible fluid with a 2D flexible shell that occupies (a part of) the boundary of the fluid domain. We assume that the shell is perfectly elastic while the fluid is governed by the…

Analysis of PDEs · Mathematics 2026-05-15 Dominic Breit , Prince Romeo Mensah , Sebastian Schwarzacher , Pei Su

In this paper, we study the global Cauchy problem for a two-phase fluid model consisting of the pressureless Euler equations and the incompressible Navier-Stokes equations where the coupling of two equations is through the drag force. We…

Analysis of PDEs · Mathematics 2021-10-04 Young-Pil Choi , Jinwook Jung

In this paper, we consider the initial-boundary value problem of the nonhomogeneous primitive equations with density-dependent viscosity. Local well-posedness of strong solutions is established for this system with a natural compatibility…

Analysis of PDEs · Mathematics 2024-04-29 Quansen Jiu , Lin Ma , Fengchao Wang

This paper deals with the longstanding quest of the possible existence of finite-time singularities in the equations governing the dynamics of inviscid fluids, namely, Euler equations. Here, two contributions are brought for the case of…

Fluid Dynamics · Physics 2026-05-19 Mokhtar Adda-Bedia , Sergio Rica

We give a rigorous, quantitative derivation of the incompressible Euler equation from the many-body problem for $N$ bosons on $\mathbb{T}^d$ with binary Coulomb interactions in the semiclassical regime. The coupling constant of the…

Analysis of PDEs · Mathematics 2021-10-11 Matthew Rosenzweig

We consider the isentropic compressible Euler system in 2 space dimensions with pressure law $p({\rho}) = {\rho}^2$ and we show the existence of classical Riemann data, i.e. pure jump discontinuities across a line, for which there are…

Analysis of PDEs · Mathematics 2014-08-26 Elisabetta Chiodaroli , Camillo De Lellis , Ondrej Kreml

In this paper, we consider the Cauchy problem to the Ericksen-Leslie system of liquid crystals in $\mathbb R^3$. Global well-posedness of strong solutions are obtained under the condition that the product of $\|u_0\|_2+\|\nabla d_0\|_2$ and…

Analysis of PDEs · Mathematics 2014-04-15 Wenya Ma , Jinkai Li , Huajun Gong

We study the global existence of a unique strong solution and its large-time behavior of a two-phase fluid system consisting of the compressible isothermal Euler equations coupled with compressible isentropic Navier-Stokes equations through…

Analysis of PDEs · Mathematics 2016-07-04 Young-Pil Choi

In this paper, we study the isothermal gas dynamics. We first establish the global existence of strong solutions to the one-dimensional isothermal Navier-Stokes system for smooth initial data without any smallness conditions, assuming that…

Analysis of PDEs · Mathematics 2025-05-22 Saehoon Eo , Namhyun Eun , Moon-Jin Kang , HyeonSeop Oh

The Euler-Navier-Stokes (E-NS) system arises as a macroscopic description of kinetic-fluid interactions, derived from the local-Maxwellian closure of the Vlasov-Fokker-Planck-Navier-Stokes flow. In this paper, we investigate the singular…

Analysis of PDEs · Mathematics 2025-12-11 Mingwen Fei , Ling-Yun Shou , Houzhi Tang

This paper investigates the well-posedness of contact discontinuity solutions and the vanishing pressure limit for the Aw-Rascle traffic flow model with general pressure functions. The well-posedness problem is formulated as a free boundary…

Analysis of PDEs · Mathematics 2025-06-10 Zijie Deng , Wenjian Peng , Tian-Yi Wang , Haoran Zhang

We discuss in this short note the local-in-time strong well-posedness of the compressible Navier-Stokes system for non-Newtonian fluids on the three dimensional torus. We show that the result established recently by Kalousek, M\'{a}cha, and…

Analysis of PDEs · Mathematics 2025-02-27 Hind Al Baba , Bilal Al Taki , Amru Hussein

We prove that the 3-D compressible Euler equations with surface tension along the moving free-boundary are well-posed. Specifically, we consider isentropic dynamics and consider an equation of state, modeling a liquid, given by Courant and…

Analysis of PDEs · Mathematics 2012-08-15 Daniel Coutand , Jason Hole , Steve Shkoller

The primitive equations (PEs) model large scale dynamics of the oceans and the atmosphere. While it is by now well-known that the three-dimensional viscous PEs is globally well-posed in Sobolev spaces, and that there are solutions to the…

Analysis of PDEs · Mathematics 2021-12-21 Charles Collot , Slim Ibrahim , Quyuan Lin

We study a three-dimensional barotropic compressible Navier-Stokes flow interacting with a viscoelastic shell that occupies a portion of the fluid boundary. The analysis is entirely Eulerian and the moving interface is parametrised by a…

Analysis of PDEs · Mathematics 2025-10-07 Pierre Marie Ngougoue Ngougoue

Local existence and well posedness for a class of solutions for the Euler Poisson system is shown. These solutions have a density $\rho$ which either falls off at infinity or has compact support. The solutions have finite mass, finite…

Analysis of PDEs · Mathematics 2017-09-26 Uwe Brauer , Lavi Karp
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