127 citations · 775 across the 18 of their papers we have counts for
4 papers · 1 filter
Mixed baroclinic convection in a cavity
Abhishek Kumar, Alban Pothérat
We study the convective patterns that arise in a nearly semi-cylindrical cavity fed in with hot fluid at the upper boundary, bounded by a cold, porous semi-circular boundary at the…
Turbulence in a stably stratified fluid: Onset of global anisotropy as a function of the Richardson number
Jayanta K. Bhattacharjee, Abhishek Kumar, Mahendra K. Verma
It is necessary to introduce an external forcing to induce turbulence in a stably stratified fluid. The Heisenberg eddy viscosity technique should in this case suffice to calculate…
Sweeping effect and Taylor's hypothesis via correlation function
Mahendra Kumar Verma, Abhishek Kumar, Akanksha Gupta
We demonstrate the sweeping effect in turbulence using numerical simulations of hydrodynamic turbulence without a mean velocity. The velocity correlation function, C(k, τ ) decays…
Stochastic bistable systems, and competing hysteresis and phase coexistence
Mahendra K. Verma, Abhishek Kumar, Adhip Pattanayak
In this paper we describe the solution of a stochastic bistable system from a dynamical perspective. We show how a single framework with variable noise can explain hysteresis at ze…