Numerical and Experimental Analysis of the Noise Generated in a Ducted Cavity Working in Various Conditions

Flow over a cavity or a gap may induce pressure fluctuations that are emitted as sound waves and perceived by a human as noise. This phenomenon may occur in different kinds of industrial machines or in everyday life devices, e.g., cars. For this reason, it is important to predict the flow conditions...

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Autores principales:	Sebastian Rulik, Włodzimierz Wróblewski, Krzysztof Rusin
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cavity noise spectral analysis experiment ducted cavity Technology T
Acceso en línea:	https://doaj.org/article/2e54abce41124546be5135a3b762227d
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id	oai:doaj.org-article:2e54abce41124546be5135a3b762227d
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spelling	oai:doaj.org-article:2e54abce41124546be5135a3b762227d2021-11-25T17:26:29ZNumerical and Experimental Analysis of the Noise Generated in a Ducted Cavity Working in Various Conditions10.3390/en142275451996-1073https://doaj.org/article/2e54abce41124546be5135a3b762227d2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7545https://doaj.org/toc/1996-1073Flow over a cavity or a gap may induce pressure fluctuations that are emitted as sound waves and perceived by a human as noise. This phenomenon may occur in different kinds of industrial machines or in everyday life devices, e.g., cars. For this reason, it is important to predict the flow conditions that intensify or attenuate the noise. This research paper presents the numerical and experimental analysis of the pressure fluctuations in a deep, ducted cavity. The experimental test stand made it possible to investigate the flow over a cavity with air velocity in the range of 30–80 m/s. The pressure fluctuations were measured using miniature microphones located in the duct and the cavity wall and processed with LabView software. The phenomena were also analysed using the computational fluid dynamics (CFD) technique. The several modelling approaches were tested and validated against the experimental data. The highest sound pressure levels were obtained for 40 and 70 m/s. The sound frequency increased with the flow velocity.Sebastian RulikWłodzimierz WróblewskiKrzysztof RusinMDPI AGarticlecavity noisespectral analysisexperimentducted cavityTechnologyTENEnergies, Vol 14, Iss 7545, p 7545 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cavity noise spectral analysis experiment ducted cavity Technology T
spellingShingle	cavity noise spectral analysis experiment ducted cavity Technology T Sebastian Rulik Włodzimierz Wróblewski Krzysztof Rusin Numerical and Experimental Analysis of the Noise Generated in a Ducted Cavity Working in Various Conditions
description	Flow over a cavity or a gap may induce pressure fluctuations that are emitted as sound waves and perceived by a human as noise. This phenomenon may occur in different kinds of industrial machines or in everyday life devices, e.g., cars. For this reason, it is important to predict the flow conditions that intensify or attenuate the noise. This research paper presents the numerical and experimental analysis of the pressure fluctuations in a deep, ducted cavity. The experimental test stand made it possible to investigate the flow over a cavity with air velocity in the range of 30–80 m/s. The pressure fluctuations were measured using miniature microphones located in the duct and the cavity wall and processed with LabView software. The phenomena were also analysed using the computational fluid dynamics (CFD) technique. The several modelling approaches were tested and validated against the experimental data. The highest sound pressure levels were obtained for 40 and 70 m/s. The sound frequency increased with the flow velocity.
format	article
author	Sebastian Rulik Włodzimierz Wróblewski Krzysztof Rusin
author_facet	Sebastian Rulik Włodzimierz Wróblewski Krzysztof Rusin
author_sort	Sebastian Rulik
title	Numerical and Experimental Analysis of the Noise Generated in a Ducted Cavity Working in Various Conditions
title_short	Numerical and Experimental Analysis of the Noise Generated in a Ducted Cavity Working in Various Conditions
title_full	Numerical and Experimental Analysis of the Noise Generated in a Ducted Cavity Working in Various Conditions
title_fullStr	Numerical and Experimental Analysis of the Noise Generated in a Ducted Cavity Working in Various Conditions
title_full_unstemmed	Numerical and Experimental Analysis of the Noise Generated in a Ducted Cavity Working in Various Conditions
title_sort	numerical and experimental analysis of the noise generated in a ducted cavity working in various conditions
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2e54abce41124546be5135a3b762227d
work_keys_str_mv	AT sebastianrulik numericalandexperimentalanalysisofthenoisegeneratedinaductedcavityworkinginvariousconditions AT włodzimierzwroblewski numericalandexperimentalanalysisofthenoisegeneratedinaductedcavityworkinginvariousconditions AT krzysztofrusin numericalandexperimentalanalysisofthenoisegeneratedinaductedcavityworkinginvariousconditions
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Numerical and Experimental Analysis of the Noise Generated in a Ducted Cavity Working in Various Conditions

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