Results 21 to 30 of about 142 (114)

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

Ergodicity of stochastically forced large scale geophysical flows

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 28, Issue 6, Page 313-320, 2001., 2001
We investigate the ergodicity of 2D large scale quasigeostrophic flows under random wind forcing. We show that the quasigeostrophic flows are ergodic under suitable conditions on the random forcing and on the fluid domain, and under no restrictions on viscosity, Ekman constant or Coriolis parameter.
Jinqiao Duan, Beniamin Goldys
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

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

Numerical Simulation of the Flow Around Two Bluff Bodies Separated by a Gap [PDF]

open access: yes, 2016
[Filipov Kostadin; Филипов Костадин]; [Tabakova Sonia; Табакова Соня]2010 Mathematics Subject Classification: 76D05 ...
Filipov, Kostadin, Tabakova, Sonia
core   +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

Eigenvalues of the time—dependent fluid flow problem I

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 13, Issue 1, Page 139-144, 1990., 1988
The direct and inverse boundary value problems for the linear unsteady viscous fluid flow through a closed conduit of a circular annular cross‐section Ω with arbitrary time‐dependent pressure gradient under the third boundary conditions have been investigated.
El-Sayed M. Zayed   +1 more
wiley   +1 more source

Preconditioned conjugate gradient methods for the incompressible Navier Stokes equations [PDF]

open access: yes, 1992
PCG methods for N-S equations 2 Abstract. A robust technique for solving primitive-variable formulations of the incompressible Navier-Stokes equations is to use Newton iteration for the fully-implicit nonlinear equations.
E. F. D’azevedo   +5 more
core   +1 more source

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