3 papers
physics.flu-dyn2026
Lagrangian particles and particle clusters in large-aspect-ratio turbulent Rayleigh-Bénard convection experiment
Prafulla P. Shevkar, Mitanjali, Roshan J. Samuel +2
We perform Lagrangian particle-tracking experiments in turbulent Rayleigh-Bénard convection at aspect ratio Gamma = 10, Rayleigh number Ra = 9.3 x 10^7, and Prandtl number Pr = 4.8…
physics.flu-dyn2025
Three-dimensional velocity gradient statistics in a mesoscale convection laboratory experiment
Prafulla P. Shevkar, Roshan J. Samuel, Christian Cierpka +1
We present three-dimensional velocity gradient statistics from Rayleigh--Bénard convection experiments in a horizontally extended cell of aspect ratio 25, a paradigm for mesoscale…
physics.flu-dyn2024
Flux scaling in Rayleigh Bénard convection: a local boundary layer analysis
Prafulla P. Shevkar, Baburaj A. Puthenveettil
We study the effect of shear due to the large scale flow (LSF) on the heat flux in Rayleigh B'enard convection for a range of near-plate Rayleigh numbers $8\times 10^7 \leq Ra_w \l…