Spatiotemporal structure of tubular vortices in turbulence

摘要

Vortical structure and its dynamics in turbulence are investigated by the use of the low-pressure vortex. The double spiral structure of cross-axial vorticity is formed around a tubular vortex on which the axial vorticity is dominant. Vortex axes are being re-linked by reconnections either of tip- type or T-type. An automatic tracking scheme of vortex axes is successfully applied to a turbulent field.