Asymptotic Approximations for the Sound Generated by Aerofoils in Unsteady Subsonic Flows

Lorna Ayton (Autor)

Buch | Softcover

XXI, 178 Seiten

2016 | 1. Softcover reprint of the original 1st ed. 2015
Springer International Publishing (Verlag)
978-3-319-38702-4 (ISBN)

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This thesis investigates the sound generated by solid bodies in steady subsonic flows with unsteady perturbations, as is typically used when determining the noise generated by turbulent interactions. The focus is predominantly on modelling the sound generated by blades within an aircraft engine, and the solutions are presented as asymptotic approximations. Key analytical techniques, such as the Wiener-Hopf method, and the matched asymptotic expansion method are clearly detailed. The results allow for the effect of variations in the steady flow or blade shape on the noise generated to be analysed much faster than when solving the problem numerically or considering it experimentally.

High-Frequency Sound Generated by Sound-Aerofoil Interaction in Subsonic Uniform Flow.- High-Frequency Sound Generated by Gust-Aerofoil Interaction in Subsonic Uniform Flow.- High-Frequency Sound Generated by Gust-Aerofoil Interaction in Subsonic Shear Flow.- Leading-Edge Stagnation-Point Noise Generated by Turbulence in Subsonic Uniform Flow.- Concluding Remarks and Further Work.

Erscheinungsdatum	21.10.2016
Reihe/Serie	Springer Theses
Zusatzinfo	XXI, 178 p. 48 illus., 6 illus. in color.
Verlagsort	Cham
Sprache	englisch
Maße	155 x 235 mm
Themenwelt	Naturwissenschaften ► Physik / Astronomie ► Mechanik
Schlagworte	Acoustic and sound engineering • acoustics • Asymptotic Approximations for Noise • Engineering Acoustics • Gust-aerofoil Interaction • Mathematical methods in physics • Mathematical Modeling and Industrial Mathematics • Mathematical Modelling • Mathematical Physics • Maths for engineers • Noise Generated by Turbulence • Physics • Physics and Astronomy • Rapid Distortion Theory • Wave mechanics (vibration and acoustics) • Wiener-Hopf Method
ISBN-10	3-319-38702-2 / 3319387022
ISBN-13	978-3-319-38702-4 / 9783319387024
Zustand	Neuware