Results 111 to 120 of about 26,842 (214)

The Oberbeck–Boussinesq approximation and Rayleigh–Bénard convection revisited

open access: yesDiscrete and Continuous Dynamical Systems
We consider the Oberbeck--Boussinesq approximation driven by an inhomogeneous temperature distribution on the boundary of a bounded fluid domain. The relevant boundary conditions are perturbed by a non--local term arising in the incompressible limit of the Navier--Stokes--Fourier system.
Feireisl, Eduard   +2 more
openaire   +4 more sources

The approximate solutions of nonlinear Boussinesq equation

open access: yesJournal of Physics: Conference Series, 2016
The homotopy analysis method (HAM) is introduced to solve the generalized Boussinesq equation. In this work, we establish the new analytical solution of the exponential function form. Applying the homotopy perturbation method to solve the variable coefficient Boussinesq equation.
Dianhen Lu, Jie Shen, Yueling Cheng
openaire   +1 more source

Rational derivation of the Boussinesq approximation

open access: yes, 2019
This note derives the Boussinesq approximation in a manner consistent with the conservation law of mass. It is shown that the governing equations of a fluid under the approximation can be obtained on the basis of the assumption that the fluid is incompressible, in the sense that the density of the fluid is constant.
openaire   +2 more sources

Convection naturelle dans une cavité rectangulaire inclinée de différents rapports de forme

open access: yesRevue des Énergies Renouvelables, 2016
Dans ce travail, nous étudions numériquement la convection naturelle instationnaire et bidimensionnelle dans une cavité rectangulaire inclinée et chauffée différentiellement. Le nombre de Rayleigh varie entre 103
R. Zarrit   +3 more
doaj  

Numerical Investigation of the Liquid Film Flows with Evaporation at Thermocapillary Interface

open access: yesMATEC Web of Conferences, 2016
Flows of the thin liquid layers on an inclined non-uniformly heated substrate are investigated numerically. The evaporation at the thermocapillary interface is taking into account.
Rezanova Ekaterina
doaj   +1 more source

Wave-structure interaction for long wave models in the presence of a freely moving body on the bottom

open access: yes, 2017
In this paper we address a particular fluid-solid interaction problem in which the solid object is lying at the bottom of a layer of fluid and moves under the forces created by waves travelling on the surface of this layer.
Benyo, Krisztian
core  

ANALYTIC-NUMERICAL MODEL OF A CONVECTIVE BOUNDARY LAYER AND HEAT TRANSFER ON A HORIZONTAL CONE

open access: yesTASK Quarterly, 2009
An approximate analytical solution of a two dimensional problem for stationary NavierStokes, continuity and Fourier-Kirchhoff equations describing a free convective heat transfer from an isothermal cone is presented.
SERGEY LEBLE, WERONIKA PELC
doaj  

On the Frequency of Internal Gravity Waves in the Atmosphere: Comparing Theory with Observations

open access: yesAtmosphere
This paper is devoted to the dynamics of the propagation of non-planetary scale internal gravity waves (IGWs) in the stratified atmosphere. We consider the system of equations describing internal gravity waves in three approximations: (1) the ...
Robert G. Zakinyan   +3 more
doaj   +1 more source

Revisiting the Energetics of the Ocean in Boussinesq Approximation

open access: yesJournal of Physical Oceanography, 2015
AbstractFollowing a suggestion by Tailleux, a consistent formulation of internal energy, the first law of thermodynamics, and the thermodynamic potentials for an ocean in Boussinesq approximation with a nonlinear equation of state is given. A modification of the pressure work in the first law is the only necessary modification from which all ...
openaire   +2 more sources

Heat transfer suppression in natural convection of air by a permanent magnet: effect of the Rayleigh number

open access: yesNihon Kikai Gakkai ronbunshu
A magnet placed near the cooling wall excludes hot oxygen, adsorbs cold oxygen, and forms vortices on the surface of the cooling wall, thereby blocking the approach of hot air. Unlike the heat transfer suppression by an adiabatic wall, this heat transfer
Takuya MASUDA   +4 more
doaj   +1 more source

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