Anonymous

Kinematic orientation and dynamical redistribution of vorticity–strain alignment currents in turbulence

The preferential alignment of vorticity with the intermediate eigenvector of the strain-rate tensor is a robust small-scale feature of turbulence, usually described through stationary alignment distributions. We ask an instantaneous question: in which direction, and how strongly,...

A directed probability current in the vorticity–strain alignment state space of homogeneous isotropic turbulence

A stationary distribution can rest on balanced exchange between states, or it can conceal a steady circulation through them. Beneath the familiar occupancies of the vorticity–strain alignment in homogeneous isotropic turbulence, we find the second: a directed probability circulat...