Parabolized Stability Analysis of Jets Issuing from Serrated Nozzles

Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)


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.


Proper Orthogonal Decomposition Strouhal Number Proper Orthogonal Decomposition Mode Linear Stability Theory Parabolized Stability Equation 



The authors thank Drs. Kristjan Gudmundsson, Arnab Samanta and Daniel Rodríguez for contributing to the development of the PSE code for the round jet. AS acknowledges support from Industrial Research and Consultancy Center of Indian Institute of Technology Bombay, via the seed grant program.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Indian Institute of Technology BombayMumbaiIndia
  2. 2.Loughborough UniversityLoughboroughUK
  3. 3.California Institute of TechnologyPasadenaUSA

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