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Parbolized Stability Analysis of Jets Issuing from Serrated Nozzles

Sinha, Aniruddha and Xia, Hao and Colonius, Tim (2015) Parbolized Stability Analysis of Jets Issuing from Serrated Nozzles. In: Fluid-Structure-Sound Interactions and Control: Proceedings of the 3rd Symposium on Fluid-Structure-Sound Interactions and Control. Lecture Notes in Mechanical Engineering. Springer , Berlin, Germany, pp. 211-215. ISBN 9783662488669.

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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
Related URLs:
URLURL TypeDescription Section Section
Sinha, Aniruddha0000-0002-7122-3549
Colonius, Tim0000-0003-0326-3909
Additional Information:© 2016 Springer. First Online: 18 December 2015.
Subject Keywords:Instability wavepackets, parabolized stability equations, coherent structures, jets, chevroned jets
Series Name:Lecture Notes in Mechanical Engineering
Record Number:CaltechAUTHORS:20190712-112322726
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97119
Deposited By: Melissa Ray
Deposited On:15 Jul 2019 20:48
Last Modified:09 Mar 2020 13:19

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