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We show existence and uniqueness of regular time-periodic solutions to the Navier-Stokes problem in the exterior of a rigid body, $\mathscr B$, that moves by arbitrary (sufficiently smooth) time-periodic translational motion of the same…

Analysis of PDEs · Mathematics 2020-03-18 Giovanni P. Galdi

The global regularity problem for the periodic Navier-Stokes system asks whether to every smooth divergence-free initial datum $u_0: (\R/\Z)^3 \to \R^3$ there exists a global smooth solution u. In this note we observe (using a simple…

Analysis of PDEs · Mathematics 2009-05-21 Terence Tao

This paper concerns the large-time behavior of perturbations around a time-periodic solution to the Navier-Stokes-Fourier system in the three-dimensional whole space. The time-periodic solution exists when a given external force is small…

Analysis of PDEs · Mathematics 2026-03-09 Naoto Deguchi

The 3D spatially periodic Navier-Stokes equation is posed as a nonlinear matrix differential equation. When the flow is assumed to be a time series having unknown wavenumber coefficients, then the matrix in this periodic Navier-Stokes…

Analysis of PDEs · Mathematics 2008-08-28 David T. Purvance

We prove the existence of small amplitude, time-quasi-periodic solutions (invariant tori) for the incompressible Navier-Stokes equation on the $d$-dimensional torus $\T^d$, with a small, quasi-periodic in time external force. We also show…

Analysis of PDEs · Mathematics 2020-05-28 Riccardo Montalto

In this note we give a criterion for the existence of global strong solutions for the 3D Navier-Stokes system for any regular initial data.

Analysis of PDEs · Mathematics 2012-07-19 Pavlo O. Kasyanov , Luisa Toscano , Nina V. Zadoianchuk

We study the spatial decay of time-periodic Navier-Stokes flow at the rate $|x|^{-1}$ with/without wake structure in 3D exterior domains when a rigid body moves periodically in time. In this regime the existence of time-periodic solutions…

Analysis of PDEs · Mathematics 2022-09-13 Toshiaki Hishida

A well-known unsolved problem (in the classical theory of fluid mechanics) is to identify a set of initial velocities, which may depend on the viscosity, the body forces and possibly the boundary of the fluid that will allow global in time…

Mathematical Physics · Physics 2007-05-23 Tepper L Gill , Woodford W. Zachary

To our knowledge, the convex integration method has been widely applied to the study of non-uniqueness of solutions to the Naiver-Stokes equations in the periodic region, but there are few works on applying this method to the corresponding…

Analysis of PDEs · Mathematics 2024-12-17 Changxing Miao , Yao Nie , Weikui Ye

We prove existence of global-in-time weak solutions of the incompressible Navier-Stokes equations in the half-space $\mathbb{R}^3_+$ with initial data in a weighted space that allow non-uniformly locally square integrable functions that…

Analysis of PDEs · Mathematics 2023-07-07 Zachary Bradshaw , Igor Kukavica , Wojciech S. Ożański

We address the global-in-time existence and pathwise uniqueness of solutions for the stochastic incompressible Navier-Stokes equations with a multiplicative noise on the three-dimensional torus. Under natural smallness conditions on the…

Probability · Mathematics 2024-10-07 Igor Kukavica , Fanhui Xu

In this paper, we prove the existence of a unique strong solution to a stochastic tamed 3D Navier-Stokes equation in the whole space as well as in the periodic boundary case. Then, we also study the Feller property of solutions, and prove…

Probability · Mathematics 2010-08-12 Michael Röckner , Xicheng Zhang

Solutions of the Navier-Stokes and Euler equations with initial conditions for 2D and 3D cases were obtained in the form of converging series, by an analytical iterative method using Fourier and Laplace transforms \cite{TT10,TT11}. There…

Analysis of PDEs · Mathematics 2022-08-22 A. Tsionskiy , M. Tsionskiy

We prove the existence of strong solutions to Navier-Stokes equations in three dimensional thin domains. Our proof is based on the energy and the Poincar\'e inequalities as well as contraction principle argument and is free of the mean…

Analysis of PDEs · Mathematics 2012-04-27 B. Nowakowski , W. Zajączkowski

We prove short time regularity of suitable weak solutions of 3D incompressible Navier-Stokes equations near a point where the initial data is locally in $L^3$. The result is applied to the regularity problems of solutions with uniformly…

Analysis of PDEs · Mathematics 2018-12-31 Kyungkeun Kang , Hideyuki Miura , Tai-Peng Tsai

We are concerned with existence of regular solutions for non-Newtonian fluids in dimension three. For a certain type of non-Newtonian fluids we prove local existence of unique regular solutions, provided that the initial data are…

Analysis of PDEs · Mathematics 2018-07-09 Kyungkeun Kang , Hwa Kil Kim , Jae-Myoung Kim

We prove the unique existence of solutions of the 3D incompressible Navier-Stokes equations in an exterior domain with small non-decaying boundary data, for $t \in R$ or $t \in (0,\infty)$. In the latter case it is coupled with small…

Analysis of PDEs · Mathematics 2011-05-03 Kyungkuen Kang , Hideyuki Miura , Tai-Peng Tsai

New classes of exact solutions of the three-dimensional unsteady Navier-Stokes equations containing arbitrary functions and parameters are described. Various periodic and other solutions, which are expressed through elementary functions are…

Fluid Dynamics · Physics 2015-05-14 S. N. Aristov , A. D. Polyanin

In this paper, we will prove a new result that guarantees the global existence of solutions to the Navier--Stokes equation in three dimensions when the initial data is sufficiently close to being two dimensional. This result interpolates…

Analysis of PDEs · Mathematics 2020-09-07 Evan Miller

This paper discussed the existence and uniqueness of the smoothing solution of the Navier-Stokes equations. At first, we construct the theory of the linear equations which is about the unknown four variables functions with constant…

Analysis of PDEs · Mathematics 2011-06-23 Jianfeng Wang