Abstract
This paper is associated with a video winner of a 2020 American Physical Society's Division of Fluid Dynamics (DFD) Milton van Dyke Award for work presented at the DFD Gallery of Fluid Motion. The original video is available online at the Gallery of Fluid Motion, https://doi.org/10.1103/APS.DFD.2020.GFM.V0067.
Highlights
Opera singers are known for their ability to control their respiration and exhalations during a musical performance
The initial velocity of the breathing jet is about 1 m/s and leads to a straight downward trajectory driven by the inertia of the air flows
The remarkable control of the expiratory flow by the opera singer during her performance and her wide-open mouth lead to air flows slower than breathing with initial velocity around 0.3 m/s
Summary
Opera singers are known for their ability to control their respiration and exhalations during a musical performance. The initial velocity of the breathing jet is about 1 m/s and leads to a straight downward trajectory driven by the inertia of the air flows. The singer performs most of the song with an open mouth, singing vowel-based sounds of frequent occurrence in the opera.
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