Heating Parameter Estimation Using Coaxial Thermocouple Gages in Wind Tunnel Test Articles.

Abstract

A heat energy balance is applied to a coaxial thermocouple gage for parameter estimation in wind tunnel test articles. This method can significantly reduce wind tunnel test costs and time. Modifications to the data reduction program HEATEST (HEATing ESTimation) are made. The programs allows for transient test techniques to be used as well as assuming an isothermal wall. A non-linear convective heat transfer coefficient model may also be used. Data is generated to test the new program. Temperature profiles throughtout the thermocouple gage were good and were compared with changes in time step, thermocouple length, and number of discrete node points. The estimation of the convective heat transfer coefficient and thermal conductivity were excellent. Keywords include: Aeronautics, Aerodynamics, Thermodynamics, and Stochastic processes.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1984
Accession Number
ADA153039

Entities

People

  • N. T. Cahoon

Organizations

  • Air Force Institute of Technology

Tags

DTIC Thesaurus Topics

  • Air Force
  • Classification
  • Computer Programs
  • Conductivity
  • Data Reduction
  • Differential Equations
  • Energy
  • Heat Energy
  • Heat Transfer
  • Heat Transfer Coefficients
  • Measurement
  • Plasma Opening Switches
  • Temperature Gradients
  • Thermal Conductivity
  • Thermodynamics
  • Wind Tunnel Tests
  • Wind Tunnels

Readers

  • Approximation Theory.
  • Combustion and Flow Dynamics.
  • Fluid Dynamics.