Results 71 to 80 of about 632,255 (202)
Oscillatory convection and limitations of the Boussinesq approximation [PDF]
Journal of Fluid Mechanics, 2016 We determine the asymptotic conditions under which the Boussinesq approximation is valid for oscillatory convection in a rapidly rotating fluid. In the astrophysically relevant parameter regime of small Prandtl number, we show that the Boussinesq prediction for the onset of convection is valid only under much more restrictive conditions than those that
Toby Wood, Paul Bushby
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Superpiles: The Impact of Mantle Temperature on Large Low Velocity Provinces
Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.Abstract Among the most prevalent features in Earth's deep mantle are the Large Low Velocity Provinces (LLVPs), hypothesized to be hotter and compositionally distinct from the surrounding mantle. LLVPs have previously been viewed as either active superplumes rising through the mantle or passive piles shaped by large scale convection.
Heidi N. Krauss, Allen K. McNamara
wiley +1 more source
Limits of the Oberbeck–Boussinesq approximation in a tall differentially heated cavity filled with water [PDF]
, 2014 The present work assesses the limits of the Oberbeck–Boussinesq (OB) approximation for the resolution of turbulent fluid flow and heat transfer inside a tall differentially heated cavity of aspect ratio G = 6.67 filled with water (Pr = 3.27, Ra = 2.12e11)
Kizildag, Deniz +3 more
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On the convergence rates for the three‐dimensional filtered Boussinesq equations
, 2021 In this paper we consider a LES model for the approximation of large scales of the 3D Boussinesq equations. We analyze the convergence rate, in appropriate norms, of the unique regular weak solution of the regularized Boussinesq equations towards a weak ...
Bisconti L. +4 more
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Journal of Geophysical Research: Atmospheres, Volume 131, Issue 19, 16 October 2026.Abstract Plume interaction with a forest canopy results in flow features distinct from those in grasslands. Here, we model the turbulence dynamics of a buoyant plume in a homogeneous plant canopy with a crosswind using Large‐Eddy Simulations. As the plume interacts with the crosswind, we observe increased vorticity at the windward and tilted hair‐pin ...
Ajinkya Desai +2 more
wiley +1 more source
Approximation à la Oberbeck-Boussinesq for fluids with pressure-induced stratified density
, 2020 We consider a model for convection in compressible fluids in two dimensions. A constitutive limit is studied in which both the mechanical compressibility and thermal expansion affect the buoyancy force.
Diego Grandi, Arianna Passerini
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MATEC Web of Conferences, 2016 Flows of a viscous incompressible liquid with a thermocapillary boundary are investigated numerically on the basis of the mathematical model that consists of the Oberbeck-Boussinesq approximation of the Navier-Stokes equations, kinematic and dynamic ...
Goncharova Olga +2 more
doaj +1 more source
Effect of the Mitral Valve on the Intra Ventricular Hemodynamics
International Journal for Numerical Methods in Biomedical Engineering, Volume 42, Issue 10, October 2026.Patient‐specific Computational Fluid Dynamics was employed to analyze the impact of four distinct mitral valve geometries, varying in area and jet direction, on left‐ventricular flow and overall heart efficiency. The valve design influenced intraventricular vortices, turbulent kinetic energy, and dissipation.
Salomé Bru +3 more
wiley +1 more source
Results in MaterialsThis study explores thermal criticality and dissipation involving a two-step reaction in a hyperbolic tangential fluid flow and quadratic Boussinesq approximation to model the complex internal heat transfer mechanisms during combustion.
A.D. Ohaegbue +4 more
doaj +1 more source
Many Faces of Boussinesq Approximations
, 2016 10 ...
Vladimirov, Vladimir A. +1 more
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