Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published May 18, 2019 | Published
Conference Paper Open

Resolvent-based analysis of streaks in turbulent jets

Abstract

Large scale, elongated structures, similar those ones widely studied in wall-bounded flows, are also present in turbulent jets. Several characteristics of these streaks can be identified via reduced order models such as resolvent analysis. The present work involves a resolvent-based study of these structures in turbulent jets. We focus on obtaining the optimal forcing that generates these energetic coherent structures. Results are compared with experimental data post-processed using spectral proper orthogonal decomposition, allowing us to draw conclusions about the nature of the non-linear forcing, since the two analyses should provide equivalent results if this term is modelled as spatially white. By identifying streaks in a global framework, we expect to better understand the mechanism by which they are generated.

Additional Information

© 2019 by Petrônio Nogueira, André Cavalieri, Oliver Schmidt, Peter Jordan, Vincent Jaunet, Ethan Pickering, Georgios Rigas, Tim Colonius. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. Published Online: 18 May 2019. Petrônio Nogueira was funded by a CNPq scholarship. André Cavalieri acknowledges financial support by CNPq (grant number 310523/2017-6). This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001.

Attached Files

Published - NogueiraCavalieriSchmidtEtAl2019.pdf

Files

NogueiraCavalieriSchmidtEtAl2019.pdf
Files (2.6 MB)
Name Size Download all
md5:3092a9068872bd1936f20c783f13d2ba
2.6 MB Preview Download

Additional details

Created:
August 19, 2023
Modified:
October 20, 2023