Abstract According to a recent hypothesis corroborated by experimental investigations, large-scale coherent structures in turbulent jet flows can be modelled as wavepackets. This conjecture suggests that these structures can be responsible for low-frequency acoustic radiation. In this contribution, we compute optimally forced stability wavepackets, based on meanflow data of a turbulent jet. The dataset is obtained from fully compressible DNS. The final aim is to assess the validity of the hypothesis by verifying to what extent the jet noise can be predicted by means of these linear structures.
Can Jet Noise Be Predicted Using Linear Instability Wavepackets?
Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows (ICJWSF2015) ; 6 ; 413-418
Springer Proceedings in Physics ; 185 , 6
01.01.2016
6 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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