Experimental Survey and Heat Flux Prediction for Thermal/Chemical Mismatches.

Abstract

Material interfaces are common in heat flux instrumentation and in modern thermal protection systems. Interfaces cause mismatches which can significantly affect convective heat flux. A literature survey on chemical and thermal mismatches with emphasis on experimental data is presented. Data indicate transient variations in heat transfer coefficient. Unsteady boundary layer equations are solved computationally using upwind differences and parabolic grid generation. Results are compared with data, and other computational and analytical solutions, to investigate solution accuracy across a mismatch. By coupling wall conditions, transient variations in heat transfer coefficient at a given deflection angle are computed on Space Shuttle Orbiter materials near an interface during unsteady pitch manuevers. Keywords: flux prediction.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1987
Accession Number
ADA182496

Entities

People

  • James K. Hodge

Organizations

  • Air Command and Staff College

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Energy
  • Fluid Dynamics
  • Fluid Mechanics
  • Heat Transfer
  • Heat Transfer Coefficients
  • Incompressible Flow
  • Instrumentation
  • Literature Surveys
  • Navier Stokes Equations
  • Space Shuttles
  • Turbulent Flow
  • Two Dimensional
  • Wind Tunnels

Readers

  • Combustion and Flow Dynamics.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Reinforced Composite Materials

Technology Areas

  • Space
  • Space - Hall-Effect Thruster