Some Structural Features of Unsteady Separating Turbulent Shear Flows,

Abstract

Some physical features of unsteady separating turbulent boundary layers are presented for practical Reynolds numbers and reduced frequencies for helicopter and turbomachinery flows. Upstream of detachment in moderate amplitude flows, the flow is quasi-steady i.e., the phase-averaged flow is described by the steady free-stream flow structure. Results show that oscillation waveform and amplitude strongly influence the detached flow behavior.

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1984
Accession Number
ADP004164

Entities

People

  • R. L. Simpson

Organizations

  • Southern Methodist University

Tags

DTIC Thesaurus Topics

  • Air Force
  • Amplitude
  • Boundary Layer
  • Flow
  • Free Stream
  • Frequency
  • Layers
  • Reynolds Number
  • Shear Flow
  • Turbulent Boundary Layer
  • United States
  • United States Air Force Academy

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.