Receptivity of laminar near-wall flows
The receptivity problem arises when one tries to provide a reason for the origin of disturbances in open near-wall flows. Turbulence in convectively unstable flows is usually a result of a development of certain disturbances which appear and start to grow far upstream of the onset of the final transition. Such flows are called ‘noise amplifiers’, in contrast to ‘noise generators’ governed by non-linear bifurcations (Huerre and Monkewitz 1985). The process of the transformation of the external disturbances into the shear flow ones is called receptivity and is the main concern in this chapter.
KeywordsVortex Porosity Attenuation Ruban Vorticity
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