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Renormalization of shell model of turbulence
Mahendra K. Verma, Shadab Alam
Renormalization enables a systematic scale-by-scale analysis of multiscale systems. In this paper, we employ \textit{renormalization group} (RG) to the shell model of turbulence an…
Turbulent drag reduction in magnetohydrodynamic and quasi-static magnetohydrodynamic turbulence
Mahendra K. Verma, Shadab Alam, Soumyadeep Chatterjee
In hydrodynamic turbulence, the kinetic energy injected at large scales cascades to the inertial range, leading to a constant kinetic energy flux. In contrast, in magnetohydrodynam…
Revisiting Bolgiano-Obukhov scaling for moderately stably stratified turbulence
Shadab Alam, Anirban Guha, Mahendra K. Verma
According to the celebrated Bolgiano--Obukhov \citep{Bolgiano_1959,Obukhov_1959} phenomenology for moderately stably stratified turbulence, the energy spectrum in the inertial rang…