title: Time-domain simulation of flute-like instruments: comparison of jet-drive and discrete-vortex models.
abstract: This paper presents two models of sound production in flute-like instruments that allow time-domain simulations. The models are based on different descriptions of the jet flow within the window of the instrument. The jet-drive model depicts the jet by its transverse perturbation that interacts with the labium to produce sound. The discrete-vortex model depicts the jet as two independent shear layers along which vortices are convected and interact with the acoustic field within the window. The limit of validity between both models is usually discussed according to the aspect ratio of the jet W/h, with W the window length and h the flue channel height. The present simulations, compared with experimental data gathered on a recorder, allow to extend the aspect ratio criterion to the notion of dynamic aspect ratio defined as λ/h where λ is the hydrodynamic wavelength that now accounts for geometrical properties, such as W/h, as well as for dynamic properties, such as the Strouhal number. The two models are found to be applicable over neighboring values of geometry and blowing pressure.
authors.affiliation: Sorbonne Universités, UPMC Univ Paris 06, UMR 7190, Institut Jean le Rond d'Alembert, LAM, F-75005, Paris, France.
authors.forename: Roman
authors.initials: R
authors.lastname: Auvray
authors.affiliation: Sorbonne Universités, UPMC Univ Paris 06, UMR 7190, Institut Jean le Rond d'Alembert, LAM, F-75005, Paris, France.
authors.forename: Augustin
authors.initials: A
authors.lastname: Ernoult
authors.affiliation: Sorbonne Universités, UPMC Univ Paris 06, UMR 7190, Institut Jean le Rond d'Alembert, LAM, F-75005, Paris, France.
authors.forename: Benoît
authors.initials: B
authors.lastname: Fabre
authors.affiliation: CNRS, UMR 7190, Institut Jean le Rond d'Alembert, F-75005, Paris, France.
authors.forename: Pierre-Yves
authors.initials: PY
authors.lastname: Lagrée
mesh_terms: D003198:Computer Simulation; D016014:Linear Models; D008962:Models, Theoretical; D009038:Motion; D009146:Music; D009716:Numerical Analysis, Computer-Assisted; D011312:Pressure; D015203:Reproducibility of Results; D013016:Sound; D013997:Time Factors