Skip to main content
Fig. 5 | Advances in Aerodynamics

Fig. 5

From: A theoretical study of serrated leading edges in aerofoil and vortical gust interaction noise

Fig. 5

Analysis by the proposed analytical model, where (a) the amplitude of \({S}\left (\hat {\alpha }, \hat {\beta }\right)\) for straight edges, and (b) the amplitude of \(\mathfrak {S}\left (\hat {\alpha }, \hat {\beta }\right)\) for wavy edges, where the normalised \(\hat {\alpha }=\alpha /\omega \) and \(\hat {\beta }=\beta /\omega \), where the nondimensional ω=k. The set-ups are essentially the same as those in [13] (Fig. 2), that is, M0=0.25, ω=1, and sinusoidal-shaped serrations with hs=0.5 and λs=4π/3. (c) The sketch of \(\mathfrak {S}(\alpha, \beta)\) for sawtooth-shaped serrations

Back to article page