71 citations · 381 across the 31 of their papers we have counts for
13 papers · 1 filter
Challenges in fluid flow simulations using Exascale computing
Mahendra K. Verma
In this paper, I discuss the challenges in porting hydrodynamic codes to futuristic exascale HPC systems. In particular, we describe the computational complexities of finite differ…
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…
Microscopic laws vs. Macroscopic laws: Perspectives from kinetic theory and hydrodynamics
Mahendra K. Verma
Reductionism is a prevalent viewpoint in science according to which all physical phenomena can be understood from fundamental laws of physics. Anderson [Science, 177, 393 (1972)],…
Turbulent drag reduction: A universal perspective from energy fluxes
Mahendra K. Verma
Injection of dilute polymer in a turbulent flow suppresses frictional drag. This challenging and technologically important problem remains primarily unresolved due to the complex n…
Scaling and spatial intermittency of thermal dissipation in turbulent convection
Shashwat Bhattacharya, Ravi Samtaney, Mahendra K. Verma
We derive scaling relations for the thermal dissipation rate in the bulk and in the boundary layers for moderate and large Prandtl number (Pr) convection. Using direct numerical si…