Imperial College London
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DrGeorgiosRigas

Faculty of Engineering, Department of Aeronautics

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 5065g.rigas CV

 
 
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Location

 

327City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Nogueira:2019:10.2514/6.2019-2569,
author = {Nogueira, PAS and Cavalieri, AVG and Schmidt, OT and Jordan, P and Jaunet, V and Pickering, E and Rigas, G and Colonius, T},
doi = {10.2514/6.2019-2569},
title = {Resolvent-based analysis of streaks in turbulent jets},
url = {http://dx.doi.org/10.2514/6.2019-2569},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - 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.
AU  - Nogueira,PAS
AU  - Cavalieri,AVG
AU  - Schmidt,OT
AU  - Jordan,P
AU  - Jaunet,V
AU  - Pickering,E
AU  - Rigas,G
AU  - Colonius,T
DO  - 10.2514/6.2019-2569
PY  - 2019///
TI  - Resolvent-based analysis of streaks in turbulent jets
UR  - http://dx.doi.org/10.2514/6.2019-2569
ER  -
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