Accession Number:

ADA137029

Title:

A Synthesized Model of the Near-Wall Behavior in Turbulent Boundary Layers.

Descriptive Note:

Interim rept.,

Corporate Author:

LEHIGH UNIV BETHLEHEM PA DEPT OF MECHANICAL ENGINEERING AND MECHANICS

Personal Author(s):

Report Date:

1984-01-01

Pagination or Media Count:

28.0

Abstract:

A model of the near-wall behavior of turbulent boundary layers is presented. Based on an extensive series of primarily visualization experiments, which are described in overview, the model proposes a sequence of events which give rise to the bursting behavior responsible for turbulence production in the near-wall region. The model illustrates how hairpin vortex flow structures, generated during low-speed streak break down and ejection, are also reponsible for the streak regeneration process, thus defining a clear cycle of turbulence generation for the near-wall region. Author

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE