A low-Rayleigh transition into chaos for natural convection inside a horizontal annulus at Prandtl number 0.1

M Usman, JH Son, IS Park - International Journal of Heat and Mass …, 2021 - Elsevier
Instabilities in the flow of natural convection in a horizontal annulus of radius ratio 2 filled
with fluid of Prandtl number 0.1 are investigated numerically. The investigation largely …

Numerical simulation of natural convection between a decentered triangular heating cylinder and a square outer cylinder filled with a pure fluid or a nanofluid using …

M El Abdallaoui, M Hasnaoui, A Amahmid - Powder Technology, 2015 - Elsevier
Natural convection around a decentered triangular cylinder placed in a square cylinder is
studied numerically using the lattice-Boltzmann method. The study is conducted for pure …

Bifurcation to unsteady natural convection in square enclosure with a circular cylinder at Rayleigh number of 107

DH Kang, MY Ha, HS Yoon, C Choi - International journal of heat and mass …, 2013 - Elsevier
This study numerically investigates the effect of the location of an inner heated cylinder
along a horizontal or diagonal line in a cooled enclosure on the fluid flow and heat transfer …

Influence of Prandtl number on the instability of natural convection flows within a square enclosure containing an embedded heated cylinder at moderate Rayleigh …

CC Liao, CA Lin - Physics of Fluids, 2015 - pubs.aip.org
Influence of Prandtl number (0.07≤ Pr≤ 7) on the buoyancy induced flow within a square
domain containing an embedded heated cylinder is investigated numerically at moderate …

Influence of Prandtl number on the chaos transition for pure natural and Rayleigh–Bénard convections inside a rectangular cavity

JH Oh, DG Kim, DH Kim, SA Aodu, IS Park - … Communications in Heat and …, 2024 - Elsevier
A peculiar flow instability known as multiple chaos transitions was recently reported for the
free convection in an enclosure where the direction of the temperature gradient changes …

Unsteady large-scale flow patterns and dynamic vortex movement in near-field triple buoyant plumes

S Yin, Y Li, Y Fan, M Sandberg - Building and Environment, 2018 - Elsevier
Unsteady flow patterns of interacting buoyant plumes are important for buoyant ventilation
and particularly influence pollutant and heat transports in indoor and outdoor environments …

Experimental investigation of the free convection velocity boundary layer and plume formation region for a heated horizontal cylinder

JP Kuehner, AM Hamed, JD Mitchell - … Journal of Heat and Mass Transfer, 2015 - Elsevier
Particle image velocimetry measurements were obtained in the free convection water flow
around a heated horizontal cylinder for a Rayleigh number of 1.33× 10 6 and a Prandtl …

Routes to chaos of natural convection flows in vertical channels

A Cimarelli, D Angeli - International Communications in Heat and Mass …, 2017 - Elsevier
The aim of the present study is the analysis of the transition to turbulence of natural
convection flows between two infinite vertical plates. For the study of the problem, a number …

Near-field merging and penetration of triple starting plumes from volumetric heat sources in a calm environment

S Yin, M Sandberg, K Lam, Y Li - International Journal of Heat and Mass …, 2017 - Elsevier
This paper investigates the buoyancy effect on near-field evolution of triple equal starting
thermal plumes from volumetric heat sources, with a focus on merging process, velocity …

Heat transfer and flow transitions of a thermal plume generated by a heating element on the enclosure bottom wall

G Barrios, G Huelsz, R Rechtman - European Journal of Mechanics-B …, 2019 - Elsevier
The two-dimensional buoyancy-induced flow above a heating horizontal element in the
center of the bottom of a rectangular enclosure filled with air is numerically studied using the …