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In the present note, we show that, as a priori bounds, the vorticity dynamics derived from Leray's backward self-similarity hypothesis admits only trivial solution in viscous as well as inviscid flows. By analogy, there is no non-zero…

流体动力学 · 物理学 2024-02-23 F. Lam

In this paper, we introduce the Fourier-restricted Euler and hypodissipative Navier--Stokes equations. These equations are analogous to the Euler and hypodissipative Navier--Stokes equations respectively, but with the Helmholtz projection…

偏微分方程分析 · 数学 2025-09-01 Evan Miller

We prove a local version of a (global) result of Merle and Zaag about ODE behavior of solutions near blowup points for subcritical nonlinear heat equations. As an application, for the equation $u_t= \Delta u+V(x)f(u)$, we rule out the…

偏微分方程分析 · 数学 2025-04-30 Jong-Shenq Guo , Philippe Souplet

In this paper we perform a blow-up and quantization analysis of the fractional Liouville equation in dimension $1$. More precisely, given a sequence $u_k :\mathbb{R} \to \mathbb{R}$ of solutions to \begin{equation} (-\Delta)^\frac{1}{2} u_k…

微分几何 · 数学 2016-07-14 Francesca Da Lio , Luca Martinazzi

We study the pressureless Navier--Stokes-Poisson equations of describing the evolution of the gaseous star in astrophysics. The isothermal blowup solutions of Yuen, to the Euler-Poisson equations in R2, can be extended to the pressureless…

天体物理学 · 物理学 2008-11-04 Manwai Yuen

We construct forward self-similar solutions (expanders) for the compressible Navier-Stokes equations. Some of these self-similar solutions are smooth, while others exhibit a singularity do to cavitation at the origin.

偏微分方程分析 · 数学 2019-03-26 Pierre Germain , Tsukasa Iwabuchi

The problem for the stationary Navier-Stokes equation in 3D under finite Dirichlet norm is open. In this paper we answer the analogous question on the 3D hyperbolic space. We also address other dimensions and more general manifolds.

偏微分方程分析 · 数学 2015-01-21 Chi Hin Chan , Magdalena Czubak

We prove quantitative regularity and blowup theorems for the incompressible Navier-Stokes equations in $\mathbb R^d$, $d\geq4$ when the solution lies in the critical space $L_t^\infty L_x^d$. Explicit subcritical bounds on the solution are…

偏微分方程分析 · 数学 2022-11-09 Stan Palasek

In this paper, we prove the blow-up of the $3$-D isentropic compressible Navier-Stokes equations for the adiabatic exponent $\gamma=5/3$, which corresponds to the law of monatomic gases. This is the degenerate case in the sense of [Merle,…

偏微分方程分析 · 数学 2025-02-11 Feng Shao , Dongyi Wei , Shumao Wang , Zhifei Zhang

We consider the initial problem for the Navier-Stokes equations over ${\mathbb R}^3 \times [0,T]$ with a positive time $T$ over specially constructed scale of function spaces of Bochner-Sobolev type. We prove that the problem induces an…

偏微分方程分析 · 数学 2021-09-14 Alexander Shlapunov , Nikolai Tarkhanov

For a singular Liouville equation, it is plausible that a non-simple blowup phenomenon occurs around a quantized singular pole. The presence of complex blowup profiles of bubbling solutions presents substantial challenges in applications.…

偏微分方程分析 · 数学 2024-09-24 Teresa D'Aprile , Juncheng Wei , Lei Zhang

This paper is concerned with two properties of positive weak solutions of quasilinear elliptic equations with nonlinear gradient terms. First, we show a Liouville-type theorem for positive weak solutions of the equation involving the…

偏微分方程分析 · 数学 2021-10-19 Caihong Chang , Bei Hu , Zhengce Zhang

In this paper, it is shown that there does not exist a non-trivial Leray's backward self-similar solution to the 3D Navier-Stokes equations with profiles in Morrey spaces $\dot{\mathcal{M}}^{q,1}(\mathbb{R}^{3})$ provided $3/2<q<6$, or in…

偏微分方程分析 · 数学 2020-06-30 Quansen Jiu , Yanqing Wang , Wei Wei

This article examines the Bouton-Lie group invariants of the Navier-Stokes equation (NSE) for incompressible fluids. Bouton's theory is applied to the general scaling transformation admitted by the NSE and is used to derive all self-similar…

综合数学 · 数学 2022-08-25 J. G. Polihronov

This paper is devoted to the study of the Stokes and Navier-Stokes equations, in a half-space, for initial data in a class of locally uniform Lebesgue integrable functions, namely $L^q_{uloc,\sigma}(\R^d_+)$. We prove the analyticity of the…

偏微分方程分析 · 数学 2020-06-17 Yasunori Maekawa , Hideyuki Miura , Christophe Prange

This note shows the blow-up of certain non-small solutions to relaxed compressible Navier-Stokes equations in divergence form.

偏微分方程分析 · 数学 2022-02-14 Johannes Bärlin

In this paper we give Navier-Stokes system associated with the Weinstein operator $(NSW)$ (see Eq.\eqref{11}), We study the existence and uniqueness of solutions to equations (NSW) in $L_{\alpha}^{p}\left(\mathbb{R}_{+}^{d+1}\right), 2…

偏微分方程分析 · 数学 2021-01-13 Youssef Bettaibi

We study cavitating self-similar solutions to compressible Navier-Stokes equations with degenerate density-dependent viscosity. We prove both existence of expanders and non-existence of small shrinkers.

偏微分方程分析 · 数学 2020-12-30 Pierre Germain , Tsukasa Iwabuchi , Tristan Léger

In this article we will present pure three dimensional analytic solutions for the Navier-Stokes and the continuity equations in Cartesian coordinates. The key idea is the three-dimensional generalization of the well-known self-similar…

数学物理 · 物理学 2015-03-19 I. F. Barna

In this paper, we study the super-Liouville equation with a spinorial Yamabe type term, a natural generalization of Liouville equation, super-Liouville equation and spinorial Yamabe type equation. We establish some refined qualitative…

偏微分方程分析 · 数学 2025-11-04 Lei Liu , Mingjun Wei