24 citations · 26 across the 2 of their papers we have counts for
6 papers
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…
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…
Similarities between the structure functions of thermal convection and hydrodynamic turbulence
Shashwat Bhattacharya, Shubhadeep Sadhukhan, Anirban Guha +1
In this paper, we analyze the scaling of velocity structure functions of turbulent thermal convection. Using high-resolution numerical simulations, we show that the structure funct…