[Canceled] Seminar "Variable Energy Flux in Turbulence" by Prof. Mahendra K. Verma
Prof. Mahendra K. Verma
Department of Physics, Indian Institute of Technology Kanpur
In three-dimensional hydrodynamic turbulence forced at large length scales, the Kolmogorov’s energy flux is constant in the inertial range. However, in the presence of multiscale forcing and dissipation, the energy flux $\Pi(k)$ varies in the inertial range itself. For example, $\Pi(k)$ decreases with wavenumbers in quasi-static MHD turbulence, stably stratified turbulence, MHD turbulence and dynamo, and in flows with Ekman friction. But, $\Pi(k)$ increases with wavenumbers in turbulent thermal convection and unstable stratified flows. In this seminar, I will try to provide a holistic perspective on the energy flux.
1. M. K. Verma, Variable Energy Flux in Turbulence, A Topical Review, J. Phys. A, 55, 013002 (2022).
2. M. K. Verma, Energy Transfers in Fluid Flows: Multiscale and Spectral Perspectives, Cambridge Univ. Press, Cambridge (2019).