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A combined incompressible and vanishing capillarity limit in the barotropic compressible Navier-Stokes equations for smooth solutions is proved. The equations are considered on the two-dimensional torus with well prepared initial data. The…

Analysis of PDEs · Mathematics 2015-06-12 A. Jüngel , C. -K. Lin , K. -C. Wu

In this paper we describe a method to derive classical solutions of the Navier-Stokes equations for non-stationary initial value problems in domain R^n (n = 2, 3 or higher). A new closed-form analytic solution of the incompressible…

Mathematical Physics · Physics 2015-09-28 R. K. Michael Thambynayagam

In this paper we study the large-time behavior of perturbative classical solutions to the hard and soft potential Boltzmann equation without the angular cut-off assumption in the whole space $\threed_x$ with $\DgE$. We use the existence…

Analysis of PDEs · Mathematics 2016-02-22 Robert M. Strain

In this paper we consider the Navier-Stokes-Korteweg equations for a viscous compressible fluid with capillarity effects in three space dimensions. We prove global existence of finite energy weak solutions for large initial data. Contrary…

Analysis of PDEs · Mathematics 2019-03-07 Paolo Antonelli , Stefano Spirito

We are concerned with the isentropic compressible Navier-Stokes system in the two-dimensional torus, with rough data and vacuum : the initial velocity is in the Sobolev space H^1 and the initial density is only bounded and nonnegative.…

Analysis of PDEs · Mathematics 2023-11-03 Raphaël Danchin , Shan Wang

Diffusive limit of the one-species Vlasov-Maxwell-Boltzmann system in perturbation framework still remains unsolved, due to the weaker time decay rate compared with the two-species Vlasov-Maxwell-Boltzmann system. By employing the weighted…

Analysis of PDEs · Mathematics 2024-06-06 Weijun Wu , Fujun Zhou , Weihua Gong , Yuan Xu

We investigate the large-time behavior of solutions toward the combination of the boundary layer and 3-rarefaction waves to the outflow problem for the compressible non-isentropic Navier-Stokes equations coupling with the Maxwell equations…

Analysis of PDEs · Mathematics 2021-08-24 Huancheng Yao , Changjiang Zhu

In this paper we consider the Cauchy problem for the 3D Navier-Stokes equations for incompressible flows. The initial data are assumed to be smooth and rapidly decaying at infinity. A famous open problem is whether classical solutions can…

Analysis of PDEs · Mathematics 2015-03-06 Jens Lorenz , Paulo R. Zingano

The hydrodynamic limit for the Boltzmann equation is studied in the case when the limit system, that is, the system of Euler equations contains contact discontinuities. When suitable initial data is chosen to avoid the initial layer, we…

Analysis of PDEs · Mathematics 2015-05-13 Feimin Huang , Yi Wang , Tong Yang

In this article, we study the continuous mild solutions to the Boltzmann equation in a bounded spatial domain, under either angular cutoff assumption or non-cutoff assumption. Without assuming convexity of the spatial domain, we establish a…

Analysis of PDEs · Mathematics 2025-12-10 Jhe-Kuan Su

The incompressible Navier-Stokes equations and static Euler equations are considered. We find that there exist infinite non-trivial regular solutions of incompressible static Euler equations with given boundary conditions. Moreover there…

Analysis of PDEs · Mathematics 2025-02-18 Yongqian Han

We consider the hydrodynamic limit of a stationary Boltzmann equation in a unit plate with in-flow boundary. We prove the solution can be approximated in $L^{\infty}$ by the sum of interior solution which satisfies steady incompressible…

Analysis of PDEs · Mathematics 2015-10-19 Lei Wu

In this paper, we study the hydrodynamic limit transition from the Boltzmann equation for gas mixtures to the two-fluid macroscopic system. Employing a meticulous dimensionless analysis, we derive several novel hydrodynamic models via the…

Analysis of PDEs · Mathematics 2024-08-08 Zhendong Fang , Kunlun Qi

This paper provides primarily an analytical ad hoc -solution for 3-dimensional, incompressible Navier-Stokes equations with a suitable external force field. The solution turns out to be smooth and integrable on the whole space. There is…

General Physics · Physics 2014-02-11 Jussi Ilmari Tyhtila

The rigorous justification of the hydrodynamic limits of kinetic equations in bounded domains has been actively investigated in recent years. In spite of the progress for the diffuse-reflection boundary case, the more challenging in-flow…

Analysis of PDEs · Mathematics 2023-04-04 Zhimeng Ouyang , Lei Wu

We establish the hydrodynamic limit of the one-dimensional Boltzmann equation with hard-sphere collisions toward Riemann solutions of the compressible Euler system. The Riemann solutions covered by our result include generic superpositions…

Analysis of PDEs · Mathematics 2026-05-26 Mingi Choe , Moon-jin Kang , Chanwoo Kim

This paper investigates the Cauchy problem for the barotropic compressible Navier-Stokes equations in $\mathbb{R}^2$ with the constant state as far field, which may be vacuum or non-vacuum. Under the assumption of a sufficiently large bulk…

Analysis of PDEs · Mathematics 2026-01-27 Qinghao Lei , Chengfeng Xiong

Continuum-based theories, such as Navier-Stokes equations, have been considered inappropriate for flows under nonequilibrium conditions. In part, it is due to the lack of rotational degrees of freedom in the Maxwell-Boltzmann distribution.…

Fluid Dynamics · Physics 2026-03-10 Mohamed M. Ahmed , Mohamad I. Cheikh , James Chen

A complex non-Newtonian fluid models the nematic liquid crystal flows confined in a bounded domain in $\mathbb{R}^3$ is considered. The system is a forced incompressible Navier-Stokes equation coupled with a parabolic type Q-tensor flows.…

Analysis of PDEs · Mathematics 2017-01-17 Yao Xiao

The Navier-Stokes equations, are understood as the result of the low-order expansion in powers of dimensionless rate of strain $\eta_{ij}=\tau_{0}S_{ij}$, where $\tau_{0}$ is the microscopic relaxation time of a close-to- thermodynamic…

Fluid Dynamics · Physics 2007-05-23 Victor Yakhot , Hudong Chen , Ilia Staroselsky , John Wanderer , Raoyang Zhang