Abstract
Coherent structures in shear layers govern many dynamic aspects of flow, entrainment of mass, transfer of momentum and noise generation [1, 2, 3]. These structures develop from instability waves and undergo a merging process. Vortex merging reduces the time scale and increases the length scale of the shear layer. At the same time, pressure fluctuations are induced by the unsteady motion in the flow. These pressure perturbations can exert high level dynamic loading on nearby structures, [4, 5, 6] and radiate to far field as nose. Adjacent to the boundary of the jet, the pressure levels drop first exponentially and then algebraically. The extent of the exponential decay region was found to be scaled with the local instability wavelength [7, 8].
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© 1996 Springer, Berlin Heidelberg
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Lafouasse, B., Chan, A., Ho, CM. (1996). Near Field Pressure Fluctuations of a Circular Jet. In: Comte-Bellot, G., Williams, J.E.F. (eds) Aero- and Hydro-Acoustics. IUTAM Symposia. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82758-7_37
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DOI: https://doi.org/10.1007/978-3-642-82758-7_37
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