Inverse Energy Cascade in Three-Dimensional Isotropic Turbulence
Inverse Energy Cascade in Three-Dimensional Isotropic Turbulence
We study the statistical properties of homogeneous and isotropic three-dimensional (3D) turbulent flows. By introducing a novel way to make numerical investigations of Navier-Stokes equations, we show that all 3D flows in nature possess a subset of nonlinear evolution leading to a reverse energy transfer: from small to large scales. …