24 citations · 26 across the 3 of their papers we have counts for
8 papers · 1 filter
Relative accuracy of turbulence simulations using pseudo-spectral and finite difference solvers
Akash Rodhiya, Shashwat Bhattacharya, Mahendra K Verma
For a single timestep, a spectral solver is known to be more accurate than its finite-difference counterpart. However, as we show in this paper, turbulence simulations using the tw…
Scale-resolved turbulent Prandtl number for Rayleigh-Bénard convection at
Shashwat Bhattacharya, Dmitry Krasnov, Ambrish Pandey +2
We present a framework to calculate the scale-resolved turbulent Prandtl number for the well-mixed and highly inertial bulk of a turbulent Rayleigh-Bénard mesoscale convecti…
Predictions of Reynolds and Nusselt numbers in turbulent convection using machine-learning models
Shashwat Bhattacharya, Mahendra K Verma, Arnab Bhattacharya
In this paper, we develop a multivariate regression model and a neural network model to predict the Reynolds number (Re) and Nusselt number in turbulent thermal convection. We comp…
Prandtl number dependence of the small-scale properties in turbulent Rayleigh-Bénard convection
Shashwat Bhattacharya, Mahendra K. Verma, Ravi Samtaney
We analyze the Prandtl number (Pr) dependence of spectra and fluxes of kinetic energy, as well as the energy injection rates and dissipation rates, of turbulent thermal convection…
Revisiting Reynolds and Nusselt numbers in turbulent thermal convection
Shashwat Bhattacharya, Mahendra K. Verma, Ravi Samtaney
In this paper, we extend Grossmann and Lohse's (GL) model [Phys. Rev. Lett. {\bf 86}, 3316 (2001)] for the predictions of Reynolds number (Re) and Nusselt number (Nu) in turbulent…
Euler Turbulence and thermodynamic equilibrium
Mahendra K. Verma, Shashwat Bhattacharya, Soumyadeep Chatterjee
We perform a unique direct numerical simulation of Euler turbulence using delta-correlated velocity field as an initial condition, and report a full range of and energy s…