Numerical Simulation of Noise Radiated from a Blunt Trailing Edge
The Lighthill acoustic analogy is applied to estimate the noise radiation from ﬂow over a blunt trailing edge. The blunt trailing edge is an effective vortex generator. Periodic vortex shedding near the trailing edge induces ﬂuctuating lift that radiates a strong Aeolian tone. The frequency of the Aeolian tone is similar to that of the vortex shedding. A 50.1 dB of Aeolian tone level is radiated from this blunt trailing edge.
R. Varatharajoo, F.I. Romli, K.A. Ahmad, D.L. Majid and F. Mustapha
S. N. A. Mohd Haris et al., "Numerical Simulation of Noise Radiated from a Blunt Trailing Edge", Applied Mechanics and Materials, Vol. 629, pp. 3-8, 2014