38 citations · 105 across the 5 of their papers we have counts for
9 papers
Convective heat transport in slender cells is close to that in wider cells at high Rayleigh and Prandtl numbers
Ambrish Pandey, Katepalli R. Sreenivasan
Direct numerical simulations of turbulent convection at high Rayleigh numbers in large aspect ratio cells are challenging because of the prohibitive computational resources require…
Non-Boussinesq convection at low Prandtl numbers relevant to the Sun
Ambrish Pandey, Jörg Schumacher, Katepalli R. Sreenivasan
Convection in the Sun occurs at Rayleigh numbers, , as high as , molecular Prandtl numbers, , as low as , under conditions that are far from satisfying th…
Thermal boundary layer structure in low-Prandtl-number turbulent convection
Ambrish Pandey
We study the structure of the thermal boundary layer (BL) in Rayleigh-Bénard convection for Prandtl number () 0.021 by conducting direct numerical simulations in a two-dimensio…
Non-Boussinesq low-Prandtl number convection with a temperature-dependent thermal diffusivity
Ambrish Pandey, Jörg Schumacher, Katepalli R. Sreenivasan
In an attempt to understand the role of the strong radial dependence of thermal diffusivity on the properties of convection in sun-like stars, we mimic that effect in non-Oberbeck-…
Lagrangian coherent sets in turbulent Rayleigh-Bénard convection
Christiane Schneide, Martin Stahn, Ambrish Pandey +4
Coherent circulation rolls and their relevance for the turbulent heat transfer in a two-dimensional Rayleigh--Bénard convection model are analyzed. The flow is in a closed cell of…
Probing turbulent superstructures in Rayleigh-Bénard convection by Lagrangian trajectory clusters
Christiane Schneide, Ambrish Pandey, Kathrin Padberg-Gehle +1
We analyze large-scale patterns in three-dimensional turbulent convection in a horizontally extended square convection cell by Lagrangian particle trajectories calculated in direct…