A Finite-Difference Wavenumber-Time Domain Method for Sound Field Prediction in a Uniformly Moving Medium

Sound field prediction has practical significance in the control of noise generated by sources in a flow, for example, the noise in aero-engines and ventilation systems. Aiming at accurate and flexible prediction of time-dependent sound field, a finite-difference wavenumber-time domain method for so...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Bichun Dong, Runmei Zhang, Chuanyang Yu, Huan Li
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/c681649df1874fbfbe6261e44fb05a59
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:c681649df1874fbfbe6261e44fb05a59
record_format	dspace
spelling	oai:doaj.org-article:c681649df1874fbfbe6261e44fb05a592021-11-22T01:10:19ZA Finite-Difference Wavenumber-Time Domain Method for Sound Field Prediction in a Uniformly Moving Medium1875-920310.1155/2021/1637338https://doaj.org/article/c681649df1874fbfbe6261e44fb05a592021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/1637338https://doaj.org/toc/1875-9203Sound field prediction has practical significance in the control of noise generated by sources in a flow, for example, the noise in aero-engines and ventilation systems. Aiming at accurate and flexible prediction of time-dependent sound field, a finite-difference wavenumber-time domain method for sound field prediction in a uniformly moving medium is proposed. The method is based on the second-order convective wave equation, and the wavenumber-time domain representation of the sound pressure field on one plane is forward propagated via a derived recursive expression. In this paper, the recursive expression is first deduced, and then numerical stability and dispersion of the proposed method are analyzed, based on which the stability condition is given and the correction of dispersion related to the transition frequency is made. Numerical simulations are conducted to test the performance of the proposed method, and the results show that the method is valid and robust at different Mach numbers.Bichun DongRunmei ZhangChuanyang YuHuan LiHindawi LimitedarticlePhysicsQC1-999ENShock and Vibration, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Bichun Dong Runmei Zhang Chuanyang Yu Huan Li A Finite-Difference Wavenumber-Time Domain Method for Sound Field Prediction in a Uniformly Moving Medium
description	Sound field prediction has practical significance in the control of noise generated by sources in a flow, for example, the noise in aero-engines and ventilation systems. Aiming at accurate and flexible prediction of time-dependent sound field, a finite-difference wavenumber-time domain method for sound field prediction in a uniformly moving medium is proposed. The method is based on the second-order convective wave equation, and the wavenumber-time domain representation of the sound pressure field on one plane is forward propagated via a derived recursive expression. In this paper, the recursive expression is first deduced, and then numerical stability and dispersion of the proposed method are analyzed, based on which the stability condition is given and the correction of dispersion related to the transition frequency is made. Numerical simulations are conducted to test the performance of the proposed method, and the results show that the method is valid and robust at different Mach numbers.
format	article
author	Bichun Dong Runmei Zhang Chuanyang Yu Huan Li
author_facet	Bichun Dong Runmei Zhang Chuanyang Yu Huan Li
author_sort	Bichun Dong
title	A Finite-Difference Wavenumber-Time Domain Method for Sound Field Prediction in a Uniformly Moving Medium
title_short	A Finite-Difference Wavenumber-Time Domain Method for Sound Field Prediction in a Uniformly Moving Medium
title_full	A Finite-Difference Wavenumber-Time Domain Method for Sound Field Prediction in a Uniformly Moving Medium
title_fullStr	A Finite-Difference Wavenumber-Time Domain Method for Sound Field Prediction in a Uniformly Moving Medium
title_full_unstemmed	A Finite-Difference Wavenumber-Time Domain Method for Sound Field Prediction in a Uniformly Moving Medium
title_sort	finite-difference wavenumber-time domain method for sound field prediction in a uniformly moving medium
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/c681649df1874fbfbe6261e44fb05a59
work_keys_str_mv	AT bichundong afinitedifferencewavenumbertimedomainmethodforsoundfieldpredictioninauniformlymovingmedium AT runmeizhang afinitedifferencewavenumbertimedomainmethodforsoundfieldpredictioninauniformlymovingmedium AT chuanyangyu afinitedifferencewavenumbertimedomainmethodforsoundfieldpredictioninauniformlymovingmedium AT huanli afinitedifferencewavenumbertimedomainmethodforsoundfieldpredictioninauniformlymovingmedium AT bichundong finitedifferencewavenumbertimedomainmethodforsoundfieldpredictioninauniformlymovingmedium AT runmeizhang finitedifferencewavenumbertimedomainmethodforsoundfieldpredictioninauniformlymovingmedium AT chuanyangyu finitedifferencewavenumbertimedomainmethodforsoundfieldpredictioninauniformlymovingmedium AT huanli finitedifferencewavenumbertimedomainmethodforsoundfieldpredictioninauniformlymovingmedium
_version_	1718418368121274368

A Finite-Difference Wavenumber-Time Domain Method for Sound Field Prediction in a Uniformly Moving Medium

Ejemplares similares