In-Duct Viscous Flow Pressure Distribution on a Body with Boundary Layer Control.

Abstract

It is well known that the static pressure distribution of an axisymmetric body operating within the boundaries of a duct such as a wind or water tunnel test section is altered from that observed in a free stream because of solid blockage and horizontal buoyancy effects. Because potential flow solutions can account only for the solid blockage, auxiliary analysis must be performed to account for the viscous (horizontal buoyancy) effects. One such analysis has been performed by this author, where it was assumed that boundary layer development occurred in a natural, flat plate-like manner over the test body and duct walls. In this report, a modification of that analysis is presented which permits one to analyze bodies with boundary layer control. In addition to the theoretical formulation, a numerical example is presented to illustrate the effect on the pressure distribution of a 0.318 m diameter body with surface suction operating in a 1.22 m diameter duct. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 10, 1981
Accession Number
ADA105396

Entities

People

  • G. C. Lauchle

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Boundary Layer Control
  • Boundary Layer Flow
  • Buoyancy
  • Flow
  • Free Stream
  • Hypervelocity Flow
  • Laminar Flow
  • Layers
  • Military Research
  • Navy
  • Potential Flow
  • Pressure Distribution
  • Shear Stresses
  • Universities
  • Viscous Flow
  • Water Tunnels

Readers

  • Combustion and Flow Dynamics.
  • Fluid Dynamics.