Results 31 to 40 of about 1,495 (117)

Unsteady stagnation point flow of a non‐Newtonian second‐grade fluid

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 60, Page 3797-3807, 2003., 2003
The unsteady two‐dimensional flow of a viscoelastic second‐grade fluid impinging on an infinite plate is considered. The plate is making harmonic oscillations in its own plane. A finite difference technique is employed and solutions for small and large frequencies of the oscillations are obtained.
F. Labropulu, X. Xu, M. Chinichian
wiley   +1 more source

A stochastic Lagrangian representation of the 3-dimensional incompressible Navier-Stokes equations [PDF]

open access: yes, 2006
In this paper we derive a representation of the deterministic 3-dimensional Navier-Stokes equations based on stochastic Lagrangian paths. The particle trajectories obey SDEs driven by a uniform Wiener process; the inviscid Weber formula for the Euler ...
Beale   +26 more
core   +1 more source

Feedback stabilization of semilinear heat equations

open access: yesAbstract and Applied Analysis, Volume 2003, Issue 12, Page 697-714, 2003., 2003
This paper is concerned with the internal and boundary stabilization of the steady‐state solutions to quasilinear heat equations via internal linear feedback controllers provided by an LQ control problem associated with the linearized equation.
V. Barbu, G. Wang
wiley   +1 more source

Modelling of the Czochralski flow

open access: yesAbstract and Applied Analysis, Volume 3, Issue 1-2, Page 1-40, 1998., 1998
The Czochralski method of the industrial production of a silicon single crystal consists of pulling up the single crystal from the silicon melt. The flow of the melt during the production is called the Czochralski flow. The mathematical description of the flow consists of a coupled system of six P.D.E.
Jan Franc
wiley   +1 more source

Two-layer-atmospheric blocking in a medium with high nonlinearity and lateral dispersion

open access: yesResults in Physics, 2018
Herein, the extended coupled Kadomtsev–Petviashvili equation (CKPE) with lateral dispersion is investigated for studying the atmospheric blocking in two layers.
M.S. Osman   +2 more
doaj   +1 more source

Analysis of a mathematical model related to Czochralski crystal growth

open access: yesAbstract and Applied Analysis, Volume 3, Issue 3-4, Page 319-342, 1998., 1998
This paper is devoted to the study of a stationary problem consisting of the Boussinesq approximation of the Navier–Stokes equations and two convection–diffusion equations for the temperature and concentration, respectively. The equations are considered in 3D and a velocity–pressure formulation of the Navier–Stokes equations is used.
Petr Knobloch, Lutz Tobiska
wiley   +1 more source

Shear‐free boundary in Stokes flow

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 19, Issue 1, Page 145-150, 1996., 1996
A theorem of Harper for axially symmetric flow past a sphere which is a stream surface, and is also shear‐free, is extended to flow past a doubly‐body 𝔅 consisting of two unequal, orthogonally intersecting spheres. Several illustrative examples are given. An analogue of Faxen′s law for a double‐body is observed.
D. Palaniappan   +2 more
wiley   +1 more source

Regularity Criteria for Navier-Stokes Equations with Slip Boundary Conditions on Non-flat Boundaries via Two Velocity Components

open access: yesAdvances in Nonlinear Analysis, 2019
H.-O. Bae and H.J. Choe, in a 1997 paper, established a regularity criteria for the incompressible Navier-Stokes equations in the whole space ℝ3 based on two velocity components. Recently, one of the present authors extended this result to the half-space
Veiga Hugo Beirão da, Yang Jiaqi
doaj   +1 more source

Numerical investigation on the effects of obstruction and side ratio on non-Newtonian fluid flow behavior around a rectangular barrier

open access: yesJournal of Applied Mathematics and Computational Mechanics, 2019
In this paper, the characteristics of the flow and forced heat transfer of power law non-Newtonian fluids that flow around a quadrilateral and rectangular cylinder that are located in a 2D channel are investigated by use of the finite volume method (FVM)
Sara Noferesti, H. Ghassemi, H. Nowruzi
semanticscholar   +1 more source

Arbitrary squeeze flow between two disks

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 17, Issue 4, Page 779-782, 1994., 1992
A viscous incompressible fluid is contained between two parallel disks with arbitrarily shrinking width h(τ). The solution is obtained as a power series in a single nondimensional parameter (squeeze number) S, for small values of S in contrast to the multifold series solution obtained by Ishizawa in terms of an infinite set of nondimensional parameters.
R. Rukmani, R. Usha
wiley   +1 more source

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