Fig. 2From: A theoretical study of serrated leading edges in aerofoil and vortical gust interaction noiseSketch of the model problem, where the (sinusoidal-shaped) wavy serrations with the profile χ(z) (with amplitude 2hs and the wavelength λs) are shown as an example. We wish to mention that our model also works for other shapes, such as sawtooth- and slotted-shaped profilesBack to article page