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)

• Supplemental Notes:
  • Revision of report dated 20 August 1970. Also available in Journal of Fluid Mechanics, volume 50 part-2 pages 285-319,1971.
• Corporate Authors:

  Johns Hopkins University, Baltimore

  Baltimore, MD  United States  21218
• Authors:
  • Kuo, AYS
  • Corrsin, S
• Publication Date: 1971-3-22

Media Info

• Pagination: 36 p.

Subject/Index Terms

• TRT Terms: Flow fields; Reynolds stress; Turbulence
• Old TRIS Terms: Intermittency; Reynolds stresses
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00033635
• Record Type: Publication
• Source Agency: National Technical Information Service
• Files: TRIS
• Created Date: Aug 25 1972 12:00AM