Heat Transfer Measurements in Cold Wind Tunnels

Abstract

Investigations were performed on instrumentation concepts for the purpose of acquiring heat transfer and recovery temperature measurements on models to be tested in cold wind tunnels. The problem in cold wind tunnels is the recovery and model initial (or ambient) temperature can be of the same level so that the temperature excursion during test is generally negligible. A literature search was performed from which 13 candidate instrumentation concepts were identified for further investigation. Detailed analysis and design efforts were performed on the candidates to identify measurement errors, fabrication, data reduction procedures and costs. Based on technical merit and cost, four sensors were selected for cold wind tunnel applications. These sensors include the 2-D foil (Gardon) and wafer thermopile calorimeters, liquid crystals and thermal phosphors.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1982
Accession Number
ADA135740

Entities

People

  • H. L. Moody
  • K. Jechel

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Cameras
  • Crystal Structure
  • Detectors
  • Electrical Resistance
  • Fabrication
  • Geometry
  • Heat Transfer
  • Heat Transfer Coefficients
  • Infrared Detectors
  • Materials
  • Measurement
  • Photographs
  • Test And Evaluation
  • Test Facilities
  • Three Dimensional
  • Two Dimensional
  • Wind Tunnels

Readers

  • Fluid Dynamics.
  • Systems Analysis and Design
  • Thermal Physics or Thermal Science.