CONDITIONAL SAMPLING AND OTHER MEASUREMENTS IN A PLANE TURBULENT WAKE

A series of hot-wire measurements were carried out in a plane wake to investigate the structure of the tubulence boundary and the relation of its instantaneous position to the behaviour in the core of the flow. The principal measured quantities were as follows: mean velocity profile; intermittency factor; burst rate; mean of the longitudinal component of velocity conditioned upon various specified interface positions; autocorrelation of the intermittency signal; probability densities at the half-intermittency point for the time between bursts and the duration of a burst; probability density for the longitudinal velocity component and its time derivative at various points across the wake; probability density at the half-intermittency point for the same quantities in the turbulent and irrotational zones separately. The present measurements appear to indicate that the turbulence boundary in the wake resembles that in other plane flows more closely than has been supposed hitherto.

• Corporate Authors:

  Cambridge University Press

  200 Euston Road
  London NW1,   England 
• Authors:
  • Thomas, R M
• Publication Date: 1973-2-20

Media Info

• Features: References;
• Pagination: p. 549-582
• Serial:
  • Journal of Fluid Mechanics
  • Volume: 57
  • Issue Number: Pt 3
  • Publisher: Cambridge University Press

Subject/Index Terms

• TRT Terms: Correlation analysis; Turbulence; Velocity; Wakes
• Old TRIS Terms: Intermittency; Velocity profiles; Wake analysis
• Subject Areas: Data and Information Technology; Design; Marine Transportation;

Filing Info

• Accession Number: 00047646
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Oct 31 1973 12:00AM