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One of the crucial aspects of patient-specific blood flow simulations is to specify material parameters and boundary conditions. The choice of boundary conditions can have a substantial impact on the character of the flow. While no-slip is…

Fluid Dynamics · Physics 2024-12-03 Alena Jarolímová , Jaroslav Hron

In this paper, we investigate the uniform regularity of solutions to the 3-dimensional isentropic compressible Navier-Stokes system with free surfaces and study the corresponding asymptotic limits of such solutions to that of the…

Analysis of PDEs · Mathematics 2015-04-08 Yu Mei , Yong Wang , Zhouping Xin

In this note we consider the inviscid limit for the 3D Boussinesq equations without diffusion, under slip boundary conditions of Navier's type. We first study more closely the Navier-Stokes equations, to better understand the problem. The…

Analysis of PDEs · Mathematics 2012-07-31 Luigi C. Berselli , Stefano Spirito

Non-linear entropy stability and a summation-by-parts framework are used to derive entropy stable wall boundary conditions for the three-dimensional compressible Navier--Stokes equations. A semi-discrete entropy estimate for the entire…

Fluid Dynamics · Physics 2015-06-23 Matteo Parsani , Mark H. Carpenter , Eric J. Nielsen

We consider a degenerate/singular wave equation in one dimension, with drift and in presence of a leading operator which is not in divergence form. We impose a homogeneous Dirichlet boundary condition where the degeneracy occurs and a…

Analysis of PDEs · Mathematics 2024-03-27 Genni Fragnelli , Dimitri Mugnai , Amine Sbai

Strong solutions of the non-stationary Navier-Stokes equations under non-linearized slip or leak boundary conditions are investigated. We show that the problems are formulated by a variational inequality of parabolic type, to which…

Analysis of PDEs · Mathematics 2012-01-24 Takahito Kashiwabara

This paper studies the incompressible limit of global strong solutions to the three-dimensional compressible Navier-Stokes equations associated with Navier's slip boundary condition, provided that the time derivatives, up to first order, of…

Analysis of PDEs · Mathematics 2013-09-03 Yaobin Ou , Dandan Ren

We consider the 2D, incompressible Navier-Stokes equations near the Couette flow, $\omega^{(NS)} = 1 + \epsilon \omega$, set on the channel $\mathbb{T} \times [-1, 1]$, supplemented with Navier boundary conditions on the perturbation,…

Analysis of PDEs · Mathematics 2024-05-30 Jacob Bedrossian , Siming He , Sameer Iyer , Fei Wang

The aim of this work is to show the local null controllability of a fluid-solid interaction system by using a distributed control located in the fluid. The fluid is modeled by the incompressible Navier-Stokes system with Navier slip…

Analysis of PDEs · Mathematics 2021-06-01 Imene Aicha Djebour

We study the large time behavior of small data solutions to the Vlasov-Navier-Stokes system set on $\Omega \times \mathbb{R}^3$, for a smooth bounded domain $\Omega$ of $\mathbb{R}^3$, with homogeneous Dirichlet boundary condition for the…

Analysis of PDEs · Mathematics 2022-02-17 Lucas Ertzbischoff , Daniel Han-Kwan , Ayman Moussa

This is the first in a series of papers connecting the boundary conditions for the compressible Navier-Stokes system from the Boltzmann equations with the Maxwell reflection boundary. The slip boundary conditions are formally derived from…

Analysis of PDEs · Mathematics 2025-06-02 Ning Jiang , Yulong Wu

We study a nonlinear, moving boundary fluid-structure interaction problem between an incompressible, viscous Newtonian fluid, modeled by the 2D Navier-Stokes equations, and an elastic structure modeled by the shell or plate equations. The…

Analysis of PDEs · Mathematics 2016-03-07 Boris Muha , Suncica Canic

In this work, we study the motion of a rigid body in a bounded domain which is filled with a compressible isentropic fluid. We consider the Navier-slip boundary condition at the interface as well as at the boundary of the domain. This is…

Analysis of PDEs · Mathematics 2021-03-17 S. Necasova , M. Ramaswamy , A. Roy , A. Schlomerkemper

We study the three-dimensional incompressible Navier-Stokes equations in a smooth bounded domain $\Omega$ with initial velocity $u_0$ square-integrable, divergence-free and tangent to $\partial \Omega$. We supplement the equations with the…

We propose a new Nitsche-type approach for weak enforcement of normal velocity boundary conditions for a Lagrangian discretization of the compressible shock-hydrodynamics equations using high-order finite elements on curved boundaries.…

Numerical Analysis · Mathematics 2023-09-06 Nabil M. Atallah , Vladimir Z. Tomov , Guglielmo Scovazzi

In this paper, we introduce a nonlocal model for linear steady Stokes system with physical no-slip boundary condition. We use the idea of volume constraint to enforce the no-slip boundary condition and prove that the nonlocal model is…

Analysis of PDEs · Mathematics 2022-03-30 Qiang Du , Zuoqiang Shi

We consider the vanishing viscosity limit of the Navier-Stokes equations in a half space, with Dirichlet boundary conditions. We prove that the inviscid limit holds in the energy norm if the product of the components of the Navier-Stokes…

Analysis of PDEs · Mathematics 2016-06-23 Peter Constantin , Tarek Elgindi , Mihaela Ignatova , Vlad Vicol

We prove that there exists an interval of time which is uniform in the vanishing viscosity limit and for which the Navier-Stokes equation with Navier boundary condition has a strong solution. This solution is uniformly bounded in a conormal…

Analysis of PDEs · Mathematics 2015-05-19 Nader Masmoudi , Frederic Rousset

In this work a Nitsche-based imposition of generalized Navier conditions on cut meshes for the Oseen problem is presented. Other methods from literature dealing with the generalized Navier condition impose this condition by means of…

Numerical Analysis · Mathematics 2018-02-14 M. Winter , B. Schott , A. Massing , W. A. Wall

We establish uniform with respect to the Mach number regularity estimates for the isentropic compressible Navier-Stokes system in smooth domains with Navier-slip condition on the boundary in the general case of ill-prepared initial data. To…

Analysis of PDEs · Mathematics 2021-08-03 Nader Masmoudi , Frédéric Rousset , Changzhen Sun