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Parabolized Stability Analysis of Jets Issuing from Serrated Nozzles

Sinha, Aniruddha and Xia, Hao and Colonius, Tim (2015) Parabolized Stability Analysis of Jets Issuing from Serrated Nozzles. In: Fluid-Structure-Sound Interactions and Control. Springer , Heidelberg, pp. 211-215. ISBN 978-3-662-48866-9.

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Jets issuing from serrated nozzles have a correspondingly serrated time-averaged flow field. We solve the mildly non-parallel linear parabolized stability problem for such high speed turbulent jets to model the coherent wavepackets in the flow. The base flow for the analysis is the mean flow field from a large-eddy simulation database of a cold Mach 0.9 fully turbulent jet issuing from a nozzle with six serrations, a benchmark case in the literature. The fluctuation data is also filtered to extract the most-energetic coherent part using proper orthogonal decomposition. Such filtered data is shown to bear an encouraging resemblance with the predicted wavepackets.

Item Type:Book Section
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Sinha, Aniruddha0000-0002-7122-3549
Colonius, Tim0000-0003-0326-3909
Additional Information:© 2016 Springer-Verlag Berlin Heidelberg.
Record Number:CaltechAUTHORS:20160915-092423132
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:70367
Deposited By: Tony Diaz
Deposited On:29 Sep 2016 23:05
Last Modified:09 Mar 2020 13:19

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