Superstructure Flow Distortion Corrections for Wind Speed and Direction Measurements Made from Tarawa Class (LHA1-LHA5) Ships.

Abstract

The available literature describing the errors in wind measurements produced by the flow distribution around ships, masts, and towers is briefly reviewed. It is demonstrated that the wind speed and direction measurments made from the standard anemometer locations onboard a Tarawa class (LHA) ship can be seriously distorted by the wind blockage produced by the ship's superstructure, mast, and antennas. Even though the wind measurements are made near the top of the forwardmost mast, the wind speed error is found to be as large as 50% and the wind direction error in excess of 10 deg. A correction scheme for determining the true wind speed and direction is presented. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Oct 31, 1986
Accession Number
ADA175223

Entities

People

  • Theodore V. Blanc

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Aircrafts
  • Anemometers
  • Boundary Layer
  • Classification
  • Coordinate Systems
  • Flight Decks
  • Measurement
  • Security
  • Ship Models
  • Space Sciences
  • Standards
  • Surface Roughness
  • Wind Direction
  • Wind Tunnel Tests
  • Wind Tunnels
  • Wind Velocity

Fields of Study

  • Environmental science

Readers

  • Fire Suppression Systems Design.
  • Fluid Dynamics.
  • Marine Hydrodynamics