Non-Darcian Bénard convection in eccentric annuli containing spherical particles
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Heat and Fluid Flow"
DOI: 10.1016/j.ijheatfluidflow.2020.108705
Abstract: Abstract In this paper, a numerical investigation of natural convection in a porous medium confined by two horizontal eccentric cylinders is presented. The cylinders are impermeable to fluid motion and retained at uniform different temperatures.… read more here.
Keywords: fluid; convection; geometry; rayleigh number ... See more keywords
Turbulent convection in a cube with mixed thermal boundary conditions: low Rayleigh number regime
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2021.121290
Abstract: Abstract Turbulent thermal convection was numerically investigated in a cubic cavity under homogeneous and inhomogeneous heating for Rayleigh number Ra = 10 7 and Prandtl number Pr = 6.46 . Inhomogeneous heating was created only… read more here.
Keywords: convection; heat; turbulent convection; boundary conditions ... See more keywords
Double-diffusive instabilities at a horizontal boundary after the sudden onset of heating
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2018.821
Abstract: When a deep body of fluid with a stable salinity gradient is heated from below at a horizontal boundary a destabilizing temperature gradient develops and can lead to instabilities. We will focus on two variants… read more here.
Keywords: onset heating; temperature; double diffusive; time ... See more keywords
The cooling box problem: convection with a quadratic equation of state
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2021.319
Abstract: Abstract We investigate the convective cooling of a fluid with a quadratic equation of state (EOS) by performing three-dimensional direct numerical simulations of a flow with a fixed top-boundary temperature, which is lower than the… read more here.
Keywords: rayleigh number; quadratic equation; equation state;
High-Rayleigh-number convection in porous–fluid layers
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2021.449
Abstract: Abstract We present a numerical study of convection in a horizontal layer comprising a fluid-saturated porous bed overlain by an unconfined fluid layer. Convection is driven by a vertical, destabilising temperature difference applied across the… read more here.
Keywords: fluid; layer; convection porous; convection ... See more keywords
Finite bandwidth, nonlinear convective flow in a mushy layer
Sign Up to like & getrecommendations! Published in 2017 at "Fluid Dynamics Research"
DOI: 10.1088/1873-7005/49/2/025513
Abstract: Finite amplitude convection with a continuous finite bandwidth of modes in a horizontal mushy layer during the solidification of binary alloys is investigated. We analyze the nonlinear convection for values of the Rayleigh number close… read more here.
Keywords: mushy layer; number; finite bandwidth; rayleigh number ... See more keywords
Rayleigh-Bénard convection: The container shape matters
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review Fluids"
DOI: 10.1103/physrevfluids.6.090502
Abstract: In an effort to achieve very large Rayleigh numbers when studying turbulence on a Rayleigh--Baposenard configuration, one can carry out simulations and experiments in as high convection cells as possible which involves using convection cells… read more here.
Keywords: container; rayleigh nard; shape; convection ... See more keywords
Heat-flux fluctuations revealing regime transitions in Rayleigh-Bénard convection
Sign Up to like & getrecommendations! Published in 2023 at "Physical Review Fluids"
DOI: 10.1103/physrevfluids.8.053501
Abstract: The study of the transitions among different regimes in thermal convection has been an issue of paramount importance in fluid mechanics. While the bifurcations at low Rayleigh number, when the flow is laminar or moderately… read more here.
Keywords: heat flux; convection; heat; rayleigh number ... See more keywords
Effect of Rayleigh Number on Internal Eccentricity in a Heated Horizontal Elliptical Cylinder to its Coaxial Square Enclosure
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Applied Mechanics and Engineering"
DOI: 10.2478/ijame-2020-0032
Abstract: Abstract This paper deals with numerical investigation of a natural convective flow in a horizontal annular space between a heated square inner cylinder and a cold elliptical outer cylinder with a Newtonian fluid. Uniform temperatures… read more here.
Keywords: geometry; cylinder; heat transfer; rayleigh number ... See more keywords