Results 11 to 20 of about 1,387 (186)

The Oberbeck–Boussinesq approximation in critical spaces [PDF]

open access: yesAsymptotic Analysis, 2013
In this paper we study the validity of the so-called Oberbeck–Boussinesq approximation for compressible viscous perfect gases in the whole three-dimensional space. Both the cases of fluids with positive heat conductivity and zero conductivity are considered.
Danchin, Raphaël, He, Lingbing
openaire   +3 more sources

Assessment of several modeling strategies on the prediction of lift-drag coefficients of a NACA0012 airfoil at a moderate Reynold number

open access: yesAlexandria Engineering Journal, 2022
This paper investigates modelling strategies on the prediction of lift and drag coefficients of a NACA0012 airfoil at Reynolds number of 360,000. Two computational methods are employed; namely Navier-Stokes equation and panel method, by using different ...
K.M. Almohammadi
doaj   +1 more source

Incompressible flows and the Boussinesq approximation: 50 years of CFD

open access: yesComptes Rendus. Mécanique, 2022
We offer a synthetic exposition on the state of the art for Computational Fluid Dynamics (CFD) relevant to the Navier–Stokes equations with the Boussinesq approximation, smoothly blending a history of the field with an accessible exposition of the ...
Lappa, Marcello
doaj   +1 more source

Mixed convective transport in inclined porous open arc-shaped enclosures saturated by nanofluids using a second-order Boussinesq approximation

open access: yesCase Studies in Thermal Engineering, 2021
Numerical simulations are performed for the mixed convective transport in an inclined open arc-shaped channel filled by isotropic porous media using nanofluids.
Sameh E. Ahmed   +2 more
doaj   +1 more source

On the numerical approximation of Boussinesq/Boussinesq systems for internal waves

open access: yesNumerical Methods for Partial Differential Equations, 2023
AbstractThe present paper is concerned with the numerical approximation of a three‐parameter family of Boussinesq systems. The systems have been proposed as models of the propagation of long internal waves along the interface of a two‐layer system of fluids with rigid‐lid condition for the upper layer and under a Boussinesq regime for the flow in both ...
Dougalis, Vassilios A.   +2 more
openaire   +4 more sources

Adomian Decomposition and Successive Approximation Methods for Solving Kaup-Boussinesq System

open access: yesScience Journal of University of Zakho, 2019
The Kaup-Boussinesq system has been solved numerically by using two methods, Successive approximation method (SAM) and Adomian decomposition method (ADM).
Saad A. Manaa, Nergiz M. Mosa
doaj   +1 more source

Capturing the baroclinic effect in non-Boussinesq gravity currents

open access: yesTheoretical and Applied Mechanics Letters, 2022
Direct numerical simulations of two-dimensional gravity currents with small and medium density variations are performed using different non-Boussinesq buoyancy approximations.
Shengqi Zhang, Zhenhua Xia
doaj   +1 more source

The Miles Theorem and New Particular Solutions to the Taylor--Goldstein Equation [PDF]

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2016
The linear stability problem of steady-state plane-parallel shear flows of a continuously stratified inviscid incompressible fluid in the gravity field between two immovable impermeable solid planes is studied in and without the Boussinesq approximation.
A.A. Gavrilieva   +2 more
doaj  

Solvability of the Boussinesq Approximation for Water Polymer Solutions

open access: yesMathematics, 2019
We consider nonlinear Boussinesq-type equations that model the heat transfer and steady viscous flows of weakly concentrated water solutions of polymers in a bounded three-dimensional domain with a heat source.
Mikhail A. Artemov   +1 more
doaj   +1 more source

Dynamic equilibria of a nonisothermal fluid

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2018
In this paper, stationary dynamic equilibria of the rotating mass of a nonisothermal fluid are discussed within the accuracy limits of the Boussinesq approximation.
Evgeny Yu Prosviryakov
doaj   +1 more source

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