Dissipation of an Axially Symmetric Turbulent Wake in the Very Far Field,
Abstract
A wake visualization technique has been used to observe turbulent wake at distances of 1000000 diameters behind an axially symmetric streamlined body traveling submerged in water. It has been found that a reverse transition occurs in the rate of wake growth between 10000 and 1000000 diameters, which is attributed to a 'reverse transition' from turbulent to laminar flow. The wake visualization technique involves dropping a dye-coated body down a taut, vertical guide wire into a large water-filled tank. Measurement of the wake growth and dissipation is made from a time series of photographs. The bodies tested were 6 x 1 prolate spheroids of two sizes. Body density was varied to change velocities.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 27, 1971
- Accession Number
- AD0737996
Entities
People
- Robert H. Waser
Organizations
- Naval Ordnance Laboratory