Results 21 to 30 of about 1,495 (117)

A mathematical clue to the separation phenomena on the two-dimensional Navier-Stokes equation [PDF]

open access: yes, 2012
In general, before separating from a boundary, the flow moves toward reverse direction near the boundary against the laminar flow direction. Here in this paper, a clue to such reverse flow phenomena (in the mathematical sense) is observed. More precisely,
Yoneda, Tsuyoshi
core   +2 more sources

On the existence of global weak solutions of a 2D sediment transport model

open access: yesNonautonomous Dynamical Systems, 2022
In the abstract, homogenize the references as follows: In this paper,we study the existence of global weak solutions of a two dimensionnal model. The model is inspired by the one studied in [Math. Models Methods Appl. Sci. 19 (2009), 477-499].
Zongo Yacouba   +3 more
doaj   +1 more source

Rayleigh-Benard convection of water conveying copper nanoparticles of larger radius and inter-particle spacing at increasing ratio of momentum to thermal diffusivities

open access: yesAlexandria Engineering Journal, 2023
As in the case of enhancing the performance of high-temperature superconductors, the dynamics of colloidal mixes of water and copper-based nanoparticles exposed to an inclined magnetic field owing to free convection is a recognized issue.
Fuzhang Wang   +4 more
doaj   +1 more source

Enstrophy Dynamics of Stochastically Forced Large-Scale Geophysical Flows [PDF]

open access: yes, 2001
Enstrophy is an averaged measure of fluid vorticity. This quantity is particularly important in {\em rotating} geophysical flows. We investigate the dynamical evolution of enstrophy for large-scale quasi-geostrophic flows under random wind forcing.
Blömker, D., Duan, Jinqiao, Wanner, T.
core   +3 more sources

A Single Cell‐Based Model of the Ductal Tumour Microarchitecture

open access: yesComputational and Mathematical Methods in Medicine, Volume 8, Issue 1, Page 51-69, 2007., 2007
The preinvasive intraductal tumours, such as the breast or prostate carcinomas, develop in many different architectural forms. There are, however, no experimental models explaining why cancer cells grow in these various configurations. We use a mathematical model to compare different proliferative conditions that can lead to such distinct ...
Katarzyna A. Rejniak, Robert H. Dillon
wiley   +1 more source

Stagnation‐point flow of the Walters′ B′ fluid with slip

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 61, Page 3249-3258, 2004., 2004
The steady two‐dimensional stagnation point flow of a non‐Newtonian Walters′ B′ fluid with slip is studied. The fluid impinges on the wall either orthogonally or obliquely. A finite difference technique is employed to obtain solutions.
F. Labropulu, I. Husain, M. Chinichian
wiley   +1 more source

Log Improvement of the Prodi-Serrin Criteria for Navier-Stokes Equations [PDF]

open access: yes, 2007
This article is devoted to a Log improvement of Prodi-Serrin criterion for global regularity to solutions to Navier-Stokes equations in dimension 3. It is shown that the global regularity holds under the condition that |u|/(log(1+|u|)) is integrable in ...
C. Chan, A. Vasseur
semanticscholar   +1 more source

Existence of optimal boundary control for the Navier-Stokes equations with mixed boundary conditions [PDF]

open access: yes, 2015
Variational approaches have been used successfully as a strategy to take advantage from real data measurements. In several applications, this approach gives a means to increase the accuracy of numerical simulations.
Guerra, Telma   +2 more
core   +2 more sources

Numerical studies of viscous incompressible flow between two rotating concentric spheres

open access: yesJournal of Applied Mathematics, Volume 2004, Issue 2, Page 91-106, 2004., 2004
The problem of determining the induced steady axially symmetric motion of an incompressible viscous fluid confined between two concentric spheres, with the outer sphere rotating with constant angular velocity and the inner sphere fixed, is numerically investigated for large Reynolds number.
E. O. Ifidon
wiley   +1 more source

An indirect boundary integral method for an oscillatory Stokes flow problem

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 47, Page 2961-2976, 2003., 2003
The purpose of this paper is to present an indirect boundary integral method for the oscillatory Stokes flow provided by the translational oscillations of two rigid spheres in an incompressible Newtonian fluid of infinite expanse.
Mirela Kohr
wiley   +1 more source

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