Heat Transfer to an Airfoil in Oscillating Flow

[+] Author and Article Information
J. A. Miller, P. F. Pucci

Naval Postgraduate School, Monterey, Calif.

J. Eng. Power 93(4), 461-468 (Oct 01, 1971) (8 pages) doi:10.1115/1.3445607 History: Received December 29, 1970; Online July 14, 2010


Local heat transfer coefficients to an airfoil in an oscillating stream have been measured for a range of frequencies and oscillation amplitudes. Results at moderate angles of attack are in agreement with previously reported findings. However, at large angles of attack, including those associated with stall in steady flow, a strong periodic starting vortex shed from the leading edge leads to a dramatic reattachment of the flow and consequent increase in local Nusselt Numbers of as much as five-fold. These effects are shown to be amplified by increasing oscillation frequency and amplitude.

Copyright © 1971 by ASME
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