Boundary layers on a flat plate at suband superorbital speeds

Hayne, M.J., Mee, D.J., Gai, S.L. and McIntyre, T.J. (2007) Boundary layers on a flat plate at suband superorbital speeds. Journal of Thermophysics And Heat Transfer, 21 4: 772-779.


Author Hayne, M.J.
Mee, D.J.
Gai, S.L.
McIntyre, T.J.
Title Boundary layers on a flat plate at suband superorbital speeds
Journal name Journal of Thermophysics And Heat Transfer   Check publisher's open access policy
ISSN 0887-8722
Publication date 2007
Year available 2007
Sub-type Article (original research)
DOI 10.2514/1.26894
Volume 21
Issue 4
Start page 772
End page 779
Total pages 8
Place of publication Reston
Publisher Amer Inst Aeronaut Astronaut
Collection year 2008
Language eng
Subject 290299 Aerospace Engineering not elsewhere classified
780102 Physical sciences
C1
Abstract The heat flux and boundary layers over a flat plate at suborbital and superorbital speeds were measured in a freepiston expansion tube at enthalpies of 26.0 and 53.4 MJ/kg, respectively. Estimates of the gas-phase and surface Damkohler numbers were made that indicate that although the boundary layer might be frozen, there is a possibility of surface reactions occurring. The heat-flux results were compared with theoretical predictions of heat flux for both frozen and equilibrium chemistries. The results indicated that the influence of real gas effects, such as recombination and surface catalycity, were minimal for the present flow conditions. Interferograms were obtained using resonance enhancement of the thermal boundary layer over a flat plate. Comparison of the measured boundary-layer thickness with several expressions used to predict the boundary-layer thickness allowed an evaluation of their effectiveness at high enthalpies.
Keyword Thermodynamics
Engineering, Mechanical
Heat-transfer
Flow
Tunnel
Q-Index Code C1
Q-Index Status Confirmed Code

 
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