Investigation of Air Flow in Right-Angle Elbows in a Rectangular Duct

Abstract

Development is discussed of an elbow for use in airplane carburetor air-intake ducts which have low losses and satisfactory velocity distribution without using turning vanes. Tests were conducted using a rectangular duct having width 2.57 times as great as the depth and the elbow in horizontal plane. Two characteristics of elbows were amount of flow for given pressure drop and velocity distribution across duct after bend. Elbow having smaller exit duct than entrance duct was found to have lowest losses.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1941
Accession Number
ADB184215

Entities

People

  • Charles H. Mclellan
  • Walter A. Bartlett Jr.

Organizations

  • Langley Research Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aeronautical Laboratories
  • Air Flow
  • Air Intakes
  • Aspect Ratio
  • Boundaries
  • Boundary Layer
  • Carburetors
  • Conductive Polymers
  • Flow
  • Layers
  • Pressure Distribution
  • Right Angles

Readers

  • Aerospace Engineering
  • Fluid Mechanics and Fluid Dynamics.
  • Structural Dynamics.