Numerical simulation of blade fault signatures from unsteady wall pressure signals

Dedoussis, V; Mathioudakis, K; Papailiou, KD

dc.contributor.author	Dedoussis, V	en
dc.contributor.author	Mathioudakis, K	en
dc.contributor.author	Papailiou, KD	en
dc.date.accessioned	2014-03-01T01:13:13Z
dc.date.available	2014-03-01T01:13:13Z
dc.date.issued	1997	en
dc.identifier.issn	0742-4795	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12370
dc.subject	Numerical Simulation	en
dc.subject.classification	Engineering, Mechanical	en
dc.title	Numerical simulation of blade fault signatures from unsteady wall pressure signals	en
heal.type	journalArticle	en
heal.identifier.primary	10.1115/1.2815583	en
heal.identifier.secondary	http://dx.doi.org/10.1115/1.2815583	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	A method for establishing signatures of faults in the rotating blades of a gas turbine compressor is presented. The method employs a panel technique for the calculation of the flow field around blade cascades, with disrupted periodicity, a situation encountered when a blade fault has occurred. From this calculation, time signals of the pressure at a location on the casing wall, facing the rotating blades, are constituted. Processing these signals, in combination with ""healthy"" pressure signals, allows the constitution of fault signatures. The proposed method employs geometric data, as well as data about the operating point of the engine. It gives the possibility of establishing the fault signatures without the need of performing experiments with implanted faults. The successful application of the method is demonstrated by comparison of signatures obtained by simulation to signatures derived from experiments with implanted blade faults, in an industrial gas turbine.	en
heal.publisher	ASME-AMER SOC MECHANICAL ENG	en
heal.journalName	Journal of Engineering for Gas Turbines and Power	en
dc.identifier.doi	10.1115/1.2815583	en
dc.identifier.isi	ISI:A1997WW75100014	en
dc.identifier.volume	119	en
dc.identifier.issue	2	en
dc.identifier.spage	362	en
dc.identifier.epage	368	en