Abstract
The subject of flow control is broadly introduced in this first chapter, leaving much of the details to the subsequent chapters of the book. The ability to actively or passively manipulate a flow field to effect a desired change is of immense technological importance, and this undoubtedly accounts for the fact that the subject is more hotly pursued by scientists and engineers than any other topic in fluid mechanics. In this chapter classical tools of flow control are emphasized, leaving the more modern strategies to the following chapter. Methods of control to achieve transition delay, separation postponement, lift enhancement, drag reduction, turbulence augmentation, or noise suppression are considered. The treatment is tutorial at times, making the material accessible to the advanced graduate student in the field of fluid mechanics. Emphasis is placed on external boundary-layer flows although applicability of some of the methods reviewed for internal flows will be mentioned. An attempt is made to present a unified view of the means by which different methods of control achieve a variety of end results. Performance penalties associated with a particular method such as cost, complexity, or trade-off will be elaborated.
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Gad-el-Hak, M. (1998). Introduction to Flow Control. In: Gad-el-Hak, M., Pollard, A. (eds) Flow Control. Lecture Notes in Physics, vol 53. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-69672-5_1
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