1.

Record Nr.

UNINA9910300408903321

Autore

Ayton Lorna

Titolo

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

Pubbl/distr/stampa

Cham : , : Springer International Publishing : , : Imprint : Springer, , 2015

ISBN

3-319-19959-5

Edizione

[1st ed. 2015.]

Descrizione fisica

1 online resource (195 p.)

Collana

Springer Theses, Recognizing Outstanding Ph.D. Research, , 2190-5053

Disciplina

629.1323

Soggetti

Acoustics

Acoustical engineering

Physics

Mathematical models

Engineering Acoustics

Mathematical Methods in Physics

Mathematical Modeling and Industrial Mathematics

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Description based upon print version of record.

Nota di bibliografia

Includes bibliographical references.

Nota di contenuto

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.

Sommario/riassunto

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.