INFLUENCE OF MACH NUMBER ON FLOW IN A THREE-DIMENSIONAL SEPARATION REGION,

Abstract

An experimental study was made of the flow structure in a three-dimensional separation region and of the effect of the free-stream Mach number on the flow pattern near a cylindrical obstacle. The model consisted of a flat plate with an infinitely high circular cylinder attached to it at 140 mm from the leading edge. The diameters of the test cylinders ranged from 3 to 30 mm; the Mach numbers varied from 1.75 to 3.85. The boundary layer before the separation line of the plate was turbulent. Results are given for interaction between the shock wave and the turbulent boundary layer and for the separated flow ahead of and behind the cylinder. Generalized relationships between the characteristic dimensions of the separation region, the external flow parameters, and the cylinder diameter are obtained. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 20, 1968
Accession Number
AD0681781

Entities

People

  • A. I. Zubkov
  • D. M. Voitenko
  • Yu. A. Panov

Organizations

  • Johns Hopkins University Applied Physics Laboratory

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Diameters
  • Flow
  • Free Stream
  • Layers
  • Leading Edges
  • Mach Number
  • Shock Waves
  • Three Dimensional
  • Turbulent Boundary Layer

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.