Orateur
Description
Reducing noise from aircraft and emerging air mobility systems relies on understanding how turbulent flow structures generate and amplify sound.
I will present two complementary lines of research that explore these mechanisms using experimental data and stability-based modeling. First, I will discuss bluffbody aeroacoustics, focusing on Aeolian tones generated in cylinder wakes. By combining time-resolved PIV and acoustic measurements with global stability analysis and Curle’s analogy, I developed a low-order noise prediction framework that captures the role of coherent structures in sound generation.
Second, I will turn to jet noise at high subsonic Mach numbers. Using Large Eddy Simulation data analyzed through stability-based eigenmode projections, I identified the resonance mechanisms responsible for discrete acoustic tones, confirmed scenarios previously hypothesized, and quantified wave reflection processes in turbulent jets.
Together, these studies outline a unified strategy for aeroacoustics research: leveraging experimental and numerical databases with linear modeling and reduced-order analysis to provide predictive insight into flow–noise coupling.