Rayleigh-Bénard convection of Casson fluids
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Thermal Sciences"
DOI: 10.1016/j.ijthermalsci.2018.01.016
Abstract: Abstract This study aims at investigating numerically the Rayleigh-Benard Convection (RBC) in viscoplastic fluids. A Casson fluid is considered in a bidimensional square cavity heated from below. The effects of the dimensionless yield stress, the… read more here.
Keywords: rayleigh nard; convection; casson; number ... See more keywords
Oscillatory Rayleigh–Bénard Convection in elasto-viscoplastic gels
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Non-newtonian Fluid Mechanics"
DOI: 10.1016/j.jnnfm.2020.104428
Abstract: Abstract Rayleigh-Benard convection (RBC) is studied in an elasto-viscoplastic (EVP) gel, the widely used and studied Carbopol gel. The transition from conductive to convective regime is determined by the Schmidt-Milverton principle which leads to a… read more here.
Keywords: rayleigh nard; elasto viscoplastic; convection elasto; convection ... See more keywords
Spatio-temporal characterization of thermal fluctuations in a non-turbulent Rayleigh–Bénard convection at steady state
Sign Up to like & getrecommendations! Published in 2020 at "Physica A: Statistical Mechanics and its Applications"
DOI: 10.1016/j.physa.2019.123867
Abstract: In this paper we present a detailed description of the statistical and computational techniques that were employed to study a driven far-from-equilibrium steady-state Rayleigh-B{e}nard system in the non-turbulent regime ($Ra\leq 3500$). In our previous work… read more here.
Keywords: rayleigh nard; nard convection; state; steady state ... See more keywords
Evidence of local equilibrium in a non-turbulent Rayleigh-Bénard convection at steady-state
Sign Up to like & getrecommendations! Published in 2022 at "Physica A: Statistical Mechanics and its Applications"
DOI: 10.1016/j.physa.2022.126985
Abstract: An approach that extends equilibrium thermodynamics principles to out-ofequilibrium systems is based on the local equilibrium hypothesis. However, the validity of the a priori assumption of local equilibrium has been questioned due to the lack… read more here.
Keywords: convection; nard convection; convection steady; equilibrium ... See more keywords
Thermal forcing and ‘classical’ and ‘ultimate’ regimes of Rayleigh–Bénard convection
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.118
Abstract: The fundamental challenge to characterize and quantify thermal transport in the strongly nonlinear regime of Rayleigh–Bénard convection – the buoyancy-driven flow of a horizontal layer of fluid heated from below – has perplexed the fluid… read more here.
Keywords: rayleigh nard; fluid; transport; convection ... See more keywords
Direct numerical simulations of Rayleigh–Bénard convection in water with non-Oberbeck–Boussinesq effects
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.787
Abstract: Rayleigh–Bénard convection in water is studied by means of direct numerical simulations, taking into account the variation of properties. The simulations considered a three-dimensional (3-D) cavity with a square cross-section and its two-dimensional (2-D) equivalent,… read more here.
Keywords: rayleigh nard; convection water; numerical simulations; oberbeck boussinesq ... See more keywords
Turbulent superstructures in Rayleigh-Bénard convection
Sign Up to like & getrecommendations! Published in 2018 at "Nature Communications"
DOI: 10.1038/s41467-018-04478-0
Abstract: Turbulent Rayleigh-Bénard convection displays a large-scale order in the form of rolls and cells on lengths larger than the layer height once the fluctuations of temperature and velocity are removed. These turbulent superstructures are reminiscent… read more here.
Keywords: large scale; rayleigh nard; superstructures rayleigh; convection ... See more keywords
A Rayleigh-Bénard convection instability analog in vibrated gas-fluidized granular particles.
Sign Up to like & getrecommendations! Published in 2022 at "Soft matter"
DOI: 10.1039/d1sm01803e
Abstract: Granular particles subject to both vertical gas flow and vertical vibration are shown experimentally to exhibit structured convection cells in a densely packed yet fluidized state without gas voids traveling through the particles. Continuum gas-granular… read more here.
Keywords: gas; convection; convection instability; rayleigh nard ... See more keywords
Heat transport in Rayleigh–Bénard convection and angular momentum transport in Taylor–Couette flow: a comparative study
Sign Up to like & getrecommendations! Published in 2017 at "Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences"
DOI: 10.1098/rsta.2016.0079
Abstract: Rayleigh–Bénard convection and Taylor–Couette flow are two canonical flows that have many properties in common. We here compare the two flows in detail for parameter values where the Nusselt numbers, i.e. the thermal transport and… read more here.
Keywords: taylor couette; rayleigh nard; angular momentum; transport ... See more keywords
Rayleigh-Bénard convection with thermal boundary inhomogeneities.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review. E"
DOI: 10.1103/physreve.105.025108
Abstract: Rayleigh-Bénard convection with nonhomogeneous thermal boundaries (sinusoidal temperature patterns set in-phase at the top and bottom plates) is numerically studied in three- and two-dimensional domains. Two spatial convective scales occur: the one due to the… read more here.
Keywords: thermal boundary; convection; rayleigh nard; boundary inhomogeneities ... See more keywords
Modulation of turbulent Rayleigh-Bénard convection under spatially harmonic heating.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review. E"
DOI: 10.1103/physreve.105.055107
Abstract: We numerically study turbulent Rayleigh-Bénard (RB) convection under spatial temperature modulation, where the bottom temperature varies sinusoidally around a mean value in space. Both two- and three-dimensional simulations are performed over the Rayleigh number range… read more here.
Keywords: convection; modulation; rayleigh nard; temperature ... See more keywords