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In this paper, the one-dimensional compressible Navier-Stokes system with outer pressure boundary conditions is investigated. Under some suitable assumptions, we prove that the specific volume and the temperature are bounded from below and…

偏微分方程分析 · 数学 2022-06-01 Guocai Cai , Canpei Chen , Yanfang Peng

We study the numerical performance of a continuous data assimilation (downscaling) algorithm, based on ideas from feedback control theory, in the context of the two-dimensional incompressible Navier--Stokes equations. Our model problem is…

动力系统 · 数学 2016-05-04 Masakazu Gesho , Eric Olson , Edriss S. Titi

We consider the asymptotic behavior as time goes to infinity of the $L^{2}$-norm of the velocity of the linearized compressible Navier-Stokes equations in ${\bf R}^{n}$ ($n \geq 2$). As an application we shall study the optimality of the…

偏微分方程分析 · 数学 2018-05-30 Ruy Coimbra Charao , Ryo Ikehata

The heat conducting compressible viscous flows are governed by the Navier-Stokes-Fourier (NSF) system. In this paper, we study the NSF system accomplished by the Newton law of cooling for the heat transfer at the boundary. On one part of…

偏微分方程分析 · 数学 2021-11-23 Luisa Consiglieri

We establish here the local-in-time well-posedness of strong solutions with large initial data to a system coupling compressible atmospheric dynamics with a refined moisture model introduced in Hittmeir and Klein (Theor. Comput. Fluid Dyn.…

偏微分方程分析 · 数学 2024-08-29 Sabine Doppler , Rupert Klein , Xin Liu , Edriss Titi

Fluid equations are nonlinear, dissipative, and non-Hamiltonian, which makes their relation to Schr\"odinger evolution and quantum algorithms nontrivial. We derive an exact Eulerian Cole-Hopf-type reformulation of isothermal compressible…

流体动力学 · 物理学 2026-05-01 James R. Beattie , Max Sokolova , Khush Negandhi , Bart Ripperda

We present and analyze a fully discrete fractional time stepping technique for the solution of the micropolar Navier Stokes equations, which is a system of equations that describes the evolution of an incompressible fluid whose material…

数值分析 · 数学 2013-12-06 Abner J. Salgado

We investigate artificial compressibility (AC) techniques for the time discretization of the incompressible Navier-Stokes equations. The space discretization is based on a lowest-order face-based scheme supporting polytopal meshes, namely…

数值分析 · 数学 2021-05-04 Riccardo Milani , Jérôme Bonelle , Alexandre Ern

A functional Bernstein - von Mises theorem is proved for posterior measures arising in a data assimilation problem with the two-dimensional Navier-Stokes equation where a Gaussian process prior is assigned to the initial condition of the…

统计理论 · 数学 2026-04-23 Dimitri Konen , Richard Nickl

We study a quasi-incompressible Navier--Stokes/Cahn--Hilliard coupled system which describes the motion of two macroscopically immiscible incompressible viscous fluids with partial mixing in a small interfacial region and long-range…

偏微分方程分析 · 数学 2025-08-12 Mingwen Fei , Xiang Fei , Daozhi Han , Yadong Liu

As lean premixed combustion systems are more susceptible to combustion instabilities than non-premixed systems, there is an increasing demand for improved numerical design tools that can predict the occurrence of combustion instabilities…

流体动力学 · 物理学 2015-05-19 Nils Erland L. Haugen , Øyvind Langørgen , Sigurd Sannan

We study the Navier-Stokes equations governing the motion of isentropic compressible fluid in three dimensions driven by a multiplicative stochastic forcing. In particular, we consider a stochastic perturbation of the system as a function…

偏微分方程分析 · 数学 2017-01-03 Dominic Breit , Martina Hofmanová

We study the Navier-Stokes system describing the motion of a compressible viscous fluid driven by a nonlinear multiplicative stochastic force. We establish local in time existence (up to a positive stopping time) of a unique solution, which…

偏微分方程分析 · 数学 2016-06-20 Dominic Breit , Eduard Feireisl , Martina Hofmanova

This paper is concerned with integral representations and asymptotic expansions of solutions to the time-periodic incompressible Navier-Stokes equations for fluid flow in the exterior of a rigid body that moves with constant velocity. Using…

偏微分方程分析 · 数学 2024-02-20 Thomas Eiter , Ana Leonor Silvestre

In this paper we establish the uniform estimates of strong solutions with respect to the Mach number and the dielectric constant to the full compressible Navier-Stokes-Maxwell system in a bounded domain. Based on these uniform estimates, we…

偏微分方程分析 · 数学 2015-04-07 Jishan Fan , Fucai Li , Gen Nakamura

We study the large-time asymptotic behavior of solutions toward the combination of a viscous contact wave with two rarefaction waves for the compressible non-isentropic Navier-Stokes equations coupling with the Maxwell equations through the…

偏微分方程分析 · 数学 2021-08-05 Huancheng Yao , Changjiang Zhu

We prove existence of weak solutions for a diffuse interface model for the flow of two viscous incompressible Newtonian fluids in a bounded domain by allowing for a degenerate mobility. The model has been developed by Abels, Garcke and…

偏微分方程分析 · 数学 2015-06-11 Helmut Abels , Daniel Depner , Harald Garcke

This article is concerned with the problem of determining an unknown source of non-potential, external time-dependent perturbations of an incompressible fluid from large-scale observations on the flow field. A relaxation-based approach is…

偏微分方程分析 · 数学 2024-02-26 Vincent R. Martinez

Consider a continuous dynamical system for which partial information about its current state is observed at a sequence of discrete times. Discrete data assimilation inserts these observational measurements of the reference dynamical system…

动力系统 · 数学 2015-05-20 Kevin Hayden , Eric Olson , Edriss S. Titi

Statistical solutions, which are time-parameterized probability measures on spaces of square-integrable functions, have been established as a suitable framework for global solutions of incompressible Navier-Stokes equations (NSE). We…

数值分析 · 数学 2021-07-14 Pratyuksh Bansal