Abstract
The unusually low frequency oscillation in the wake of an aerofoil is explored experimentally as well as computationally for a NACA0012 aerofoil with a "glaze ice accretion" at the leading edge. Experimentally, flow oscillations are observed at low frequencies that correspond to a Strouhal number of about 0.02. This occurs in the angle of attack range of 8deg to 9deg, near the onset of static stall for this aerofoil. With a Navier-Stokes computation, "limit-cycle" oscillations in the flow and in the aerodynamic forces are also observed at low Streuhal numbers. However, the occurrence of the oscillation is found to depend on the turbulence model in use as well as the Reynolds number. (A)
Cite
CITATION STYLE
Zaman, K. B. M. Q., & Potapczuk, M. G. (1989). The low frequency oscillation in the flow over a NAGA0012 airfoil with an “iced” leading edge. LOW REYNOLDS NUMBER AERODYNAMICS. PROC. CONF., NOTRE DAME, U.S.A., JUNE 5-7, 1989 }EDITED BY T.J. MUELLER]. (LECTURE NOTES IN, (54 ), Berlin, Germany, Springer-Verlag, 1989), 271–282. https://doi.org/10.1007/978-3-642-84010-4_20
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