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The Navier--Stokes equations for incompressible flows past a two--dimensional sphere are considered in this article. The existence of an inertial form of the equations is established. Furthermore for the first time for fluid equations, we…

chao-dyn · 物理学 2008-02-03 Roger Temam , Shouhong Wang

Cavity flow problems in two dimensions, as well as in the axially symmetric three-dimensional case, have been extensively studied in the literature from a qualitative perspective. While numerous results exist concerning minimizers or stable…

偏微分方程分析 · 数学 2025-09-03 Masoud Bayrami , Morteza Fotouhi , Parisa Vosooqnejad

Nonlinearity continuation method, applied to boundary value problems for steady-state Richards equation, gradually approaches the solution through a series of intermediate problems. Originally, the Newton method with simple line search…

数值分析 · 数学 2021-05-27 Denis Anuprienko

Explicit equations are given for describing the space-time evolution of non-ideal (viscous) relativistic fluids undergoing boost-invariant longitudinal and arbitrary transverse expansion. The equations are derived from the second-order…

核理论 · 物理学 2008-11-26 Ulrich W. Heinz , Huichao Song , Asis K. Chaudhuri

The aim of this communication is to present a simplified, yet rigorous, deduction of the Boussinesq approximated governing equations for buoyant flows. In order to carry out the core deduction procedure, a simplified version of the manifold…

流体动力学 · 物理学 2023-10-10 Antonio Barletta

In this paper, we proved the well-posedness theory of compressible subsonic jet flows for two-dimensional steady Euler system with {\it general} incoming horizontal velocity as long as the flux is larger than a critical value. One of the…

偏微分方程分析 · 数学 2024-02-23 Yan Li , Wenhui Shi , Lan Tang , Chunjing Xie

The vapor-liquid critical behavior of intrinsically asymmetric fluids is studied in finite systems of linear dimensions, $L$, focusing on periodic boundary conditions, as appropriate for simulations. The recently propounded ``complete''…

统计力学 · 物理学 2009-11-10 Young C. Kim , Michael E. Fisher

Partially invariant solution to (2+1)D shallow water equation is constructed and investigated. The solution describes an extension of a stripe, bounded by linear source and drain of fluid. Realizations of smooth flow and of hydraulic jump…

流体动力学 · 物理学 2010-08-05 Sergey V. Golovin

A supersymmetric extension of the two-phase fluid flow system is formulated. A superalgebra of Lie symmetries of the supersymmetric extension of this system is computed. The classification of the one-dimensional subalgebras of this…

数学物理 · 物理学 2021-03-30 A. M. Grundland , A. J. Hariton

We prove local well-posedness in regular spaces and a Beale-Kato-Majda blow-up criterion for a recently derived stochastic model of the 3D Euler fluid equation for incompressible flow. This model describes incompressible fluid motions whose…

数学物理 · 物理学 2018-11-14 Dan Crisan , Franco Flandoli , Darryl D. Holm

We provide a integration of Navier-Stokes equations concerning the unsteady-state laminar flow of an incompressible, isothermal (newtonian) fluid in a cylindrical vessel spinning about its symmetry axis, say $z$, and inside which the liquid…

流体动力学 · 物理学 2016-12-14 Alessio Bocci , Giovanni Mingari Scarpello , Daniele Ritelli

In Part II of the paper, we prove linear instability of a certain class of radially symmetric flows of an ideal incompressible fluid in dimension two used in Part I

偏微分方程分析 · 数学 2018-05-25 Misha Vishik

This book is devoted to the study of the linear and nonlinear stability of shear flows and boundary layers for Navier Stokes equations for incompressible fluids with Dirichlet boundary conditions in the case of small viscosity. The aim of…

偏微分方程分析 · 数学 2025-06-03 Emmanuel Grenier , Toan T. Nguyen

We introduce action-driven flows for causal variational principles, being a class of non-convex variational problems emanating from applications in fundamental physics. In the compact setting, H\"older continuous curves of measures are…

数学物理 · 物理学 2026-05-27 Felix Finster , Franz Gmeineder

This paper is concerned with qualitative properties of bounded steady flows of an ideal incompressible fluid with no stagnation point in the two-dimensional plane R^2. We show that any such flow is a shear flow, that is, it is parallel to…

偏微分方程分析 · 数学 2018-10-03 Francois Hamel , Nikolai Nadirashvili

Following Arnold's geometric interpretation, the Euler equations of an incompressible fluid moving in a domain D are known to be the optimality equation of the minimizing geodesic problem along the group of orientation and volume preserving…

偏微分方程分析 · 数学 2022-04-06 Yann Brenier , Iván Moyano

The present work investigates the evolution of linear perturbations of time-dependent ideal fluid flows with advected quantities, expressed in terms of the second order variations of the action corresponding to a Lagrangian defined on a…

流体动力学 · 物理学 2024-04-02 Darryl D. Holm , Ruiao Hu , Oliver D. Street

Exploring the general analytical solutions to the Euler equations for ideal fluids holds significant theoretical and practical importance. The steady flows in two-dimensional spaces are considered whether there is an analytical solution in…

流体动力学 · 物理学 2025-10-29 Wenan Zou

The theory of integrable systems of Hamiltonian PDEs and their near-integrable deformations is used to study evolution equations resulting from vertical-averages of the Euler system for two-layer stratified flows in an infinite 2D channel.…

数学物理 · 物理学 2015-12-24 R. Camassa , G. Falqui , G. Ortenzi

We study the (local) propagation of plane waves in a relativistic, non-dissipative, two-fluid system, allowing for a relative velocity in the "background" configuration. The main aim is to analyze relativistic two-stream instability. This…

广义相对论与量子宇宙学 · 物理学 2010-11-29 L. Samuelsson , C. S. Lopez-Monsalvo , N. Andersson , G. L. Comer