Lior Gefen
Roma Tre University
3 Papers
9 Citations
Lior Gefen is an academic researcher from Roma Tre University. The author has contributed to research in topics: Jet (fluid) & Aeroacoustics. The author has an hindex of 3, co-authored 3 publications.
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Papers
Vortex dynamics and sound emission in excited high-speed jets
TL;DR: In this article, the authors studied the dynamics of and noise generated by large-scale structures in a Mach 0.9 turbulent jet of Reynolds number 6.2 times 10.5$ using plasma-based excitation of shear layer instabilities.
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Broadband Shock-cell Noise Signature Identification Using a Wavelet-based Method
Lior Gefen,Carlos Pérez Arroyo,Roberto Camussi,Guillaume Puigt,Christophe Airiau +4 more
- 30 May 2016
TL;DR: In this article, a wavelet-based technique was applied to a pressure nearfield line array for the sake of extracting the signatures related to noise production mechanisms, each signature characterized by its shape and time-scale.
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Pressure-density gradient correlations in the near-field of a transonic jet
Elena Miguel,Lior Gefen,Carina Freitas,Silvano Grizzi,Roberto Camussi,Mario Felli +5 more
- 16 Jun 2014
TL;DR: The relation between pressure fluctuations and density gradients in the near-field of a jet at M = 0.9 is studied in this article, where the density gradient was acquired with the background-oriented Schlieren technique.
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