Numerical simulation of blade fault signatures from unsteady wall pressure signals

Dedoussis, V; Mathioudakis, K; Papiliou, KD

dc.contributor.author	Dedoussis, V	en
dc.contributor.author	Mathioudakis, K	en
dc.contributor.author	Papiliou, KD	en
dc.date.accessioned	2014-03-01T02:48:16Z
dc.date.available	2014-03-01T02:48:16Z
dc.date.issued	1994	en
dc.identifier.issn	04021215	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33686
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0027927540&partnerID=40&md5=c4d7098f3b532e7e56a5c71622141b7c	en
dc.subject.other	Calculations	en
dc.subject.other	Cascades (fluid mechanics)	en
dc.subject.other	Compressors	en
dc.subject.other	Computer simulation	en
dc.subject.other	Equipment testing	en
dc.subject.other	Flow measurement	en
dc.subject.other	Gas turbines	en
dc.subject.other	Geometry	en
dc.subject.other	Mathematical models	en
dc.subject.other	Pressure	en
dc.subject.other	Signal processing	en
dc.subject.other	Blade fault signatures	en
dc.subject.other	Numerical simulation	en
dc.subject.other	Periodicity	en
dc.subject.other	Pressure signals	en
dc.subject.other	Turbomachine blades	en
dc.title	Numerical simulation of blade fault signatures from unsteady wall pressure signals	en
heal.type	conferenceItem	en
heal.publicationDate	1994	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 which is 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 geometrical 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	Publ by ASME, New York, NY, United States	en
heal.journalName	American Society of Mechanical Engineers (Paper)	en
dc.identifier.spage	1	en
dc.identifier.epage	11	en