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5 - Free Shear Layers and Jets

Published online by Cambridge University Press:  04 April 2024

Thomas C. Corke
Thomas C. Corke
Affiliation:
University of Notre Dame, Indiana
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Summary

Chapter 5 focuses on free shear layers and jets that involve the merging of two flow streams. Away from a boundary, the mean flow that results is inviscidly unstable and rapidly leads to the formation of coherent vortical structures that drive strong fluid mixing. In jets, it can result in large acoustic levels. Free shear layers are also highly sensitive to sound excitation that can lead to resonant growth of the instability, or a means of control. With this understanding, both passive and active methods of free shear layer control are presented.

Keywords

Shear-Layer InstabilitiesJet InstabilitiesJet Column InstabilitySupersonic JetsVortex PairingFluid MixingAcoustic ReceptivityPassive ControlActive ControlApplications
Type
Chapter
Information
Flow Control
A Fluid Instability Approach
 , pp. 175 - 219
Publisher: Cambridge University Press
Print publication year: 2024

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