CURVED JET FLOWS. VOLUME 1

Abstract

A simple equation is derived to describe curvilinear flow, and this is then applied to various practical problems. In the case of annular jet flow, previous theories are shown to be approximate solutions to the general equation; the more exact solution of the report is shown to give better agreement with experiment. The new theory is also applied to the flow of air in a curved duct, the flow into an intake, the jet flap, and Coanda flow. Comparison with experiment again gives good agreement. Because curvilinear flow implies diffusion, the theory of diffusion is studied in some detail, and a general theory is developed for the total head lost in a rapid diffusion. When applied to the diffusion loss measured in the nozzle of an annular jet, and the analogous losses in a curved duct, the theory gives excellent agreement with experiment. The various investigations cover fairly wide areas in subsonic aerodynamics. Thus, it has proved impossible to work out the applications of the theory completely for all the cases considered. The same is true of the experimental work reported.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1965
Accession Number
AD0616395

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Power
  • Boundary Layer
  • Contracts
  • Diffusion
  • Diffusion Theory
  • Experimental Data
  • Flow Fields
  • Fluid Flow
  • Geometry
  • Measurement
  • Plenum Chambers
  • Potential Flow
  • Pressure Distribution
  • Pressure Gradients
  • Three Dimensional
  • Trailing Edges
  • Transportation

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Fluid Dynamics.