A Solid State Drag Anemometer Used to Measure Vertical Wind Shear

Abstract

Micrometeorologists and air pollution meteorologists often require reliable indications of the vertical shear in the horizontal wind field in the planetary boundary layer. The vertical wind shear is an essential parameter of atmospheric stability and turbulent mixing. Accurate measurements of this quantity and vertical temperature gradients are combined to indicate atmospheric stability. The drag anemometer is a simple device that is well suited for wind velocity measurements. The drag force resulting from wind flowing over a body causes deformation of a cantilever; the strain in this strip can be sensed by strain gages. The goal of this research was to determine whether or not it is possible to accurately measure vertical gradients of horizontal velocity over short distances using the drag anemometer.

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Document Details

Document Type
Technical Report
Publication Date
May 29, 1975
Accession Number
ADA025387

Entities

People

  • George F. Duffield

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Anemometers
  • Boundary Layer
  • Equations
  • Materials
  • Measurement
  • Meteorology
  • Resistance
  • Richardson Number
  • Semiconductors
  • Stainless Steel
  • Strain Gages
  • Temperature Coefficients
  • Temperature Gradients
  • Turbulence
  • Turbulent Mixing
  • Wind Shear
  • Wind Velocity

Fields of Study

  • Environmental science

Readers

  • Fluid Dynamics.
  • Geodesy
  • Mechanical Engineering/Mechanics of Materials.