Preliminary Report on Diffuser-Screen Combinations for Reducing Wind-Tunnel Turbulence

Abstract

Experiments were conducted on single screens, diffuser-screen combinations, turbulence reduction, and effects of screens on flow in diffuser. As many screens as possible may be used consistent with allowable reduction in energy ratio of the tunnel. Arrangement of many screens with low K (pressure drop coefficient of screen) is more efficient than one of few screens with high K value. Turbulence reduction depends only on area of diffuser when screens are selected and located for zero over-all pressure drop.

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Document Details

Document Type
Technical Report
Publication Date
Apr 29, 1946
Accession Number
ADC802543

Entities

People

  • G. B. Schubauer
  • W. G. Spangenberg

Organizations

  • National Institute of Standards and Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Coefficients
  • Department Of Defense
  • Diffusers
  • Diffusion
  • Dynamic Pressure
  • Electronic Mail
  • Energy
  • Equations
  • Flow Separation
  • Kinetic Energy
  • Measurement
  • Standards
  • Static Pressure
  • Turbulence
  • Wide Angles
  • Wind Tunnels

Readers

  • Combustion and Flow Dynamics.