Article ID Journal Published Year Pages File Type
792508 Journal of Fluids and Structures 2009 12 Pages PDF
Abstract

In this paper, we review some recent results concerning the physics of forcing in open flows. First, we recall some properties of global modes in wakes, showing their shapes and their dependence on the Reynolds number and underline the importance of the mean flow correction induced by the fluctuations. Second, we show how a local temporal forcing can affect these properties, always through the modification of the mean flow, until the wake reaches a critical transition even far from the threshold. At last, we address some conjectures about an extended model suitable for describing the dynamics of forced wakes.

Related Topics
Physical Sciences and Engineering Engineering Mechanical Engineering
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