Astroplasmas Seminar
Fridays at 12:30pm, Dome Room, Peyton Hall
Fridays at 12:30pm, Dome Room, Peyton Hall
Next seminar
Speaker: Mahendra K. Verma (Indian Institute of Technology Kanpur, India)
Abstract: The problem of scaling in isotropic magnetohydrodynamic (MHD) turbulence has remained unresolved, with competing predictions of $k^{-5/3}$ (Kolmogorov) and $k^{-3/2}$ (Iroshnikov-Kraichnan) scalings. In this talk I will present results of high-resolution numerical simulations on $8192^2$ and $1024^3$ grids. The computed energy spectra are closer to $k^{-5/3}$ than $k^{-3/2}$. More importantly, our detailed analyses of structure functions, intermittency exponents, and energy fluxes demonstrate robust support for Kolmogorov scaling. Our findings firmly establish Kolmogorov scaling in MHD turbulence and significantly improve the theoretical foundations for modeling astrophysical turbulence and dynamo processes.