Detection of vaneless diffuser rotating stall by means of dynamic pressure sensors and acoustic measurements

An accurate estimation of rotating stall is one of the key technologies for high-pressure centrifugal compressors. Several techniques have been proposed to detect the stall onset; inter alia, few dynamic pressure probes have been shown to not only properly detect the phenomenon, but also reconstruct...

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Autores principales:	Romani Luca, Bosi Lorenzo, Baroni Alberto, Toni Lorenzo, Biliotti Davide, Ferrara Giovanni, Bianchini Alessandro
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/b5da14d08663491b901085296cd03bd8
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spelling	oai:doaj.org-article:b5da14d08663491b901085296cd03bd82021-11-08T15:18:54ZDetection of vaneless diffuser rotating stall by means of dynamic pressure sensors and acoustic measurements2267-124210.1051/e3sconf/202131211007https://doaj.org/article/b5da14d08663491b901085296cd03bd82021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/88/e3sconf_ati2021_11007.pdfhttps://doaj.org/toc/2267-1242An accurate estimation of rotating stall is one of the key technologies for high-pressure centrifugal compressors. Several techniques have been proposed to detect the stall onset; inter alia, few dynamic pressure probes have been shown to not only properly detect the phenomenon, but also reconstruct the stall characteristics after an ensemble averaging approach. The massive use of this technique in the field is, however, not a common practice yet. In the present study, the use of dynamic pressure probes has been combined with that of an environmental microphone to evaluate the prospects of this latter for a possible stall onset detection. To this end, experimental tests have been carried out in the experimental test rig of the Department of Industrial Engineering (DIEF) of Università degli Studi di Firenze. Results show that the microphone was able to distinguish the onset of rotating stall accurately and promptly, even though – differently from dynamic pressure sensors - it does not provide sufficient information to determine the characteristics of the stall pattern. On this basis, the use of acoustic measurements could find room for automatic detection of rotating stall onset.Romani LucaBosi LorenzoBaroni AlbertoToni LorenzoBiliotti DavideFerrara GiovanniBianchini AlessandroEDP SciencesarticleEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 312, p 11007 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Environmental sciences GE1-350
spellingShingle	Environmental sciences GE1-350 Romani Luca Bosi Lorenzo Baroni Alberto Toni Lorenzo Biliotti Davide Ferrara Giovanni Bianchini Alessandro Detection of vaneless diffuser rotating stall by means of dynamic pressure sensors and acoustic measurements
description	An accurate estimation of rotating stall is one of the key technologies for high-pressure centrifugal compressors. Several techniques have been proposed to detect the stall onset; inter alia, few dynamic pressure probes have been shown to not only properly detect the phenomenon, but also reconstruct the stall characteristics after an ensemble averaging approach. The massive use of this technique in the field is, however, not a common practice yet. In the present study, the use of dynamic pressure probes has been combined with that of an environmental microphone to evaluate the prospects of this latter for a possible stall onset detection. To this end, experimental tests have been carried out in the experimental test rig of the Department of Industrial Engineering (DIEF) of Università degli Studi di Firenze. Results show that the microphone was able to distinguish the onset of rotating stall accurately and promptly, even though – differently from dynamic pressure sensors - it does not provide sufficient information to determine the characteristics of the stall pattern. On this basis, the use of acoustic measurements could find room for automatic detection of rotating stall onset.
format	article
author	Romani Luca Bosi Lorenzo Baroni Alberto Toni Lorenzo Biliotti Davide Ferrara Giovanni Bianchini Alessandro
author_facet	Romani Luca Bosi Lorenzo Baroni Alberto Toni Lorenzo Biliotti Davide Ferrara Giovanni Bianchini Alessandro
author_sort	Romani Luca
title	Detection of vaneless diffuser rotating stall by means of dynamic pressure sensors and acoustic measurements
title_short	Detection of vaneless diffuser rotating stall by means of dynamic pressure sensors and acoustic measurements
title_full	Detection of vaneless diffuser rotating stall by means of dynamic pressure sensors and acoustic measurements
title_fullStr	Detection of vaneless diffuser rotating stall by means of dynamic pressure sensors and acoustic measurements
title_full_unstemmed	Detection of vaneless diffuser rotating stall by means of dynamic pressure sensors and acoustic measurements
title_sort	detection of vaneless diffuser rotating stall by means of dynamic pressure sensors and acoustic measurements
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/b5da14d08663491b901085296cd03bd8
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Detection of vaneless diffuser rotating stall by means of dynamic pressure sensors and acoustic measurements

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