Structure and behavior of a turbulent ring vortex

The turbulent condition of an instable ring is described. A dyed turbulent water ring vortex moving in otherwise stationary water has a warmer shell than its surroundings; a cooler core than its shell; and produces secondary vortices. Parts of these instable secondary vortices go to form the wake of the turbulent vortex. This production of secondary vortices seems to be responsible for parts of the sound spectra, both of single turbulent vortex, and of jets. The mixing of vortex core and vortex shell material in the secondary vortices is described. The core of the primary vortex controls the frequency of the series of secondary vortices by means of this mixing process.