Adiabatic Wall Effectiveness of a Turbulent Boundary Layer With Slot Injection

[+] Author and Article Information
R. E. Mayle, F. C. Kopper

Pratt and Whitney Aircraft, East Hartford, Conn.

J. Heat Transfer 98(2), 240-244 (May 01, 1976) (5 pages) doi:10.1115/1.3450525 History: Received October 20, 1975; Online August 11, 2010


An analysis is presented which extends the theoretical work of Weighardt and determines the adiabatic wall effectiveness of a turbulent boundary layer in a constant free-stream velocity flow heated or cooled by the discharge of a secondary fluid through a slot. A comparison of the analysis with the experimental results of Wieghardt is made and it is found that the streamwise decay in adiabatic wall effectiveness, except in the immediate region of the slot, may be explained by considering the thermal boundary layer growth within the hydrodynamic boundary layer.

Copyright © 1976 by ASME
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