Unsteady Surface Flow Behavior on a Cascade of Airfoils Oscillating Below Stall.

Abstract

Tests have been performed on a cascade of airfoils oscillating in pitch using hot films to detect unsteady changes in the flow over the suction surface. It was found that unsteady transition from laminar to turbulent flow propagates forward along the chord and that unsteady reattachment propagates rearward. At low incidence angle the turbulent flow region does not reach the leading edge, and at higher incidence angle the laminar flow region does not extend rearward beyond mid chord. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 29, 1975
Accession Number
ADA017073

Entities

People

  • Franklin O. Carta

Organizations

  • Purdue University

Tags

DTIC Thesaurus Topics

  • Cooperation
  • Flow
  • Fluid Flow
  • Laminar Flow
  • Leading Edges
  • Transitions
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.