EXPERIMENTS ON INTERNAL INTERMITTENCY AND FINE-STRUCTURE DISTRIBUTION FUNCTIONS IN FULLY TURBULENT FLUIDS
Spatial intermittency in the velocity field fine-structure of fully turbulent flow regions, first observed by Batchelor and Townsend (1949), is studied further in grid-generated nearly isotropic turbulence and on the axis of a round jet. At large enough Reynolds numbers, appropriately filtered hot-wire anemometer signals appear intermittent as the turbulent patterns are convected past the hot wire by the mean flow. Measurements show that there is a decrease in the relative fluid volume (equal to the 'intermittency factor') occupied by fine-structure of given size as the turbulence Reynolds number is increased. (Author)
- Revision of report dated 20 August 1970. Also available in Journal of Fluid Mechanics, volume 50 part-2 pages 285-319,1971.
Johns Hopkins University, BaltimoreBaltimore, MD USA 21218
- Kuo, AYS
- Corrsin, S
- Publication Date: 1971-3-22
- Pagination: 36 p.
- TRT Terms: Flow fields; Reynolds stress; Turbulence
- Old TRIS Terms: Intermittency; Reynolds stresses
- Subject Areas: Design; Marine Transportation;
- Accession Number: 00033635
- Record Type: Publication
- Source Agency: National Technical Information Service
- Files: TRIS
- Created Date: Aug 25 1972 12:00AM