03755nam 22007215 450 991030040890332120200705071556.03-319-19959-510.1007/978-3-319-19959-7(CKB)3710000000434208(EBL)2120659(OCoLC)911179605(SSID)ssj0001525168(PQKBManifestationID)11869198(PQKBTitleCode)TC0001525168(PQKBWorkID)11486474(PQKB)10379053(DE-He213)978-3-319-19959-7(MiAaPQ)EBC2120659(PPN)186401566(EXLCZ)99371000000043420820150615d2015 u| 0engur|n|---|||||txtccrAsymptotic Approximations for the Sound Generated by Aerofoils in Unsteady Subsonic Flows /by Lorna Ayton1st ed. 2015.Cham :Springer International Publishing :Imprint: Springer,2015.1 online resource (195 p.)Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053Description based upon print version of record.3-319-19958-7 Includes bibliographical references.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.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.Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053AcousticsAcoustical engineeringPhysicsMathematical modelsAcousticshttps://scigraph.springernature.com/ontologies/product-market-codes/P21069Engineering Acousticshttps://scigraph.springernature.com/ontologies/product-market-codes/T16000Mathematical Methods in Physicshttps://scigraph.springernature.com/ontologies/product-market-codes/P19013Mathematical Modeling and Industrial Mathematicshttps://scigraph.springernature.com/ontologies/product-market-codes/M14068Acoustics.Acoustical engineering.Physics.Mathematical models.Acoustics.Engineering Acoustics.Mathematical Methods in Physics.Mathematical Modeling and Industrial Mathematics.629.1323Ayton Lornaauthttp://id.loc.gov/vocabulary/relators/aut792228MiAaPQMiAaPQMiAaPQBOOK9910300408903321Asymptotic Approximations for the Sound Generated by Aerofoils in Unsteady Subsonic Flows1771473UNINA