Numerical investigation of instability and transition to chaos in electro-convection of dielectric liquids between concentric cylinders

J Huang, Q Wang, Y Guan, Z Du… - Physics of …, 2021 - pubs.aip.org
The two-dimensional (2D) electro-convection (EC) flow of dielectric liquids between two
concentric cylindrical electrodes driven by unipolar injection of ions is investigated …

Supercritical and subcritical rotating convection in a horizontally periodic box with no-slip walls at the top and bottom

S Mandal, M Ghosh, P Maity, A Banerjee, P Pal - Physics of Fluids, 2022 - pubs.aip.org
The study of instabilities in the convection of rotating fluids is one of the classical topics of
research. However, in spite of more than five decades of research, the instabilities and …

Criteria for the onset of convection in the phase-change Rayleigh–Bénard system with moving melting-boundary

O Satbhai, S Roy - Physics of Fluids, 2020 - pubs.aip.org
Here, for the first time, we report the criterion for the onset of convection in a low Prandtl
number phase-change Rayleigh–Bénard (RB) system with an upward moving melt interface …

Onset of oscillatory magnetoconvection under rapid rotation and spatially varying magnetic field

S Sahoo, S ES - Physics of Fluids, 2023 - pubs.aip.org
The onset of periodic time-varying magnetoconvection in a regime relevant to the Earth's
outer core is investigated in this study. A rapidly rotating plane fluid layer subject to an …

Effect of horizontal aspect ratio on convection rolls in the presence of transverse magnetic field

L Sharma, P Pal - Physics of Fluids, 2023 - pubs.aip.org
We perform three-dimensional direct numerical simulations to investigate the effect of
transverse magnetic field on the convection rolls of electrically conducting fluids using the …

Effect of horizontal magnetic field on Küppers–Lortz instability

S Mandal, S Sarkar, P Pal - Physics of Fluids, 2023 - pubs.aip.org
We investigate the effect of an external horizontal magnetic field on the Küppers–Lortz
instability (KLI) in rotating Rayleigh–Bénard convection of Boussinesq fluids using weakly …

One-dimensional models for supercritical and subcritical transitions in rotating convection

S Mandal, S Sarkar, P Pal - Physical Review Fluids, 2024 - APS
Numerous studies on natural and man made systems including rotating convection report
the phenomena of supercritical and subcritical transitions from one state to another with the …

Dynamical transition and bifurcation of hydromagnetic convection in a rotating fluid layer

L Li, Y Fan, D Han, Q Wang - Communications in Nonlinear Science and …, 2022 - Elsevier
We study the stability and dynamic transition of a rotating electrically conducting fluid layer in
the presence of an external magnetic field based on the Boussinesq approximation. By …

Nonlinear dynamics of steady oblique rolls in rotating magnetoconvection: Pattern transition, flow multiplicity and hysteresis

L Sharma, P Pal, M Ghosh - Physics of Fluids, 2024 - pubs.aip.org
We report results of the numerical investigation carried out to discern the instabilities and
pattern transitions near the onset of rotating magnetoconvection (RMC) using the plane …

Transitions in overstable rotating magnetoconvection

A Banerjee, M Ghosh, P Pal - Physical Review E, 2020 - APS
The classical Rayleigh-Bénard convection (RBC) system is known to exhibit either
subcritical or supercritical transition to convection in the presence or absence of rotation …