Results 81 to 90 of about 576,001 (212)

Simulation of the two-dimensional Rayleigh-Taylor instability problem by using diffuse-interface model

open access: yesAIP Advances, 2019
The purpose of this paper is to simulate a two-dimensional Rayleigh-Taylor instability problem using the diffuse-interface formulation of the incompressible Navier-Stokes equations. The governing equations consist of a system of coupled nonlinear partial
Saher Akmal Khan, Abdullah Shah
doaj   +1 more source

Nonlinear Dynamo in Obliquely Rotating Stratified Electroconductive Fluid in an Uniformly Magnetic Field

open access: yesEast European Journal of Physics, 2020
In this paper, we investigated a new large-scale instability that arises in an obliquely rotating convective electrically conducting fluid in an external uniform magnetic field with a small-scale external force with zero helicity.
Michael I. Kopp   +3 more
doaj   +1 more source

Observed Bottom Intensified Diurnal Currents on the Upper Continental Slope North of Svalbard

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.
Abstract In the Arctic Ocean, dissipation is generally weak except for some hot spots on the continental slope or along the edge of the Yermak Plateau where observations suggest that tidal currents are the main source of dissipation. In this study, we analyze observations collected between September 2017 and November 2019 from a mooring deployed on the
Christophe Herbaut   +10 more
wiley   +1 more source

Limits of the Oberbeck–Boussinesq approximation in a tall differentially heated cavity filled with water [PDF]

open access: yes, 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
core   +1 more source

Many Faces of Boussinesq Approximations

open access: yes, 2016
10 ...
Vladimirov, Vladimir A.   +1 more
openaire   +2 more sources

Enhancing the Upper Boundary Layer Damping Scheme for km‐Scale ICON: A Question of Wavelength

open access: yesJournal of Advances in Modeling Earth Systems, Volume 18, Issue 9, September 2026.
Abstract The upper boundary condition treatment in atmospheric models has a pronounced impact on stability and performance. At the same time, the choice of damping settings can severely impact atmospheric states by not sufficiently preventing back‐reflections of vertically propagating waves from the model top or provoking back‐reflections from the ...
C. A. Kroll   +4 more
wiley   +1 more source

Thermal dissipation of two-step combustible tangent hyperbolic fluid with quadratic Boussinesq approximation and convective cooling

open access: yesResults in Materials
This 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

NORi: An ML‐Augmented Ocean Boundary Layer Parameterization

open access: yesJournal of Advances in Modeling Earth Systems, Volume 18, Issue 9, September 2026.
Abstract NORi is a machine learning (ML) parameterization of ocean boundary layer (BL) turbulence that is physics‐based and augmented with neural networks. NORi stands for neural ordinary differential equations Richardson number (Ri) closure. The physical parameterization is controlled by a Richardson number‐dependent diffusivity and viscosity.
Xin Kai Lee   +6 more
wiley   +1 more source

Irreversible Stirring and Mixing of Tracers by Oceanic Internal Gravity Waves

open access: yesAGU Advances, Volume 7, Issue 6, September 2026.
Abstract Oceanic internal waves are often thought to be ineffective in stirring and mixing tracer fields such as heat, salt, carbon, and other nutrients. Due to their oscillatory nature, waves are expected to merely displace tracers periodically around their mean position.
C. P. Sanjay, Jim Thomas
wiley   +1 more source

A numerical investigation of constant-volume non-Boussinesq density currents [PDF]

open access: yes, 2010
The time-dependent behaviour of non-Boussinesq high-Reynolds-number density currents of density ρc, released from a lock of height h₀ and length x₀ into a ambient of height H and density ρₐ, is considered. We use two dimensional Navier-Stokes simulations
Ungarish, Marius   +2 more
core  

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