Parallel CFD tool to produce faulty blade signatures for diagnostic purposes

Koubogiannis, DG; Iliadis, VP; Giannakoglou, KC

dc.contributor.author	Koubogiannis, DG	en
dc.contributor.author	Iliadis, VP	en
dc.contributor.author	Giannakoglou, KC	en
dc.date.accessioned	2014-03-01T02:48:41Z
dc.date.available	2014-03-01T02:48:41Z
dc.date.issued	1998	en
dc.identifier.issn	04021215	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34017
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0031653282&partnerID=40&md5=750172e6fbfc13a094920a79823e9859	en
dc.subject.other	Computational fluid dynamics	en
dc.subject.other	Database systems	en
dc.subject.other	Failure analysis	en
dc.subject.other	Gas turbines	en
dc.subject.other	Parallel processing systems	en
dc.subject.other	Pressure measurement	en
dc.subject.other	Interblade regions	en
dc.subject.other	Turbomachine blades	en
dc.title	Parallel CFD tool to produce faulty blade signatures for diagnostic purposes	en
heal.type	conferenceItem	en
heal.publicationDate	1998	en
heal.abstract	In the turbomachinery field, many diagnostic systems utilize databases with symptoms corresponding to the most frequent operation faults. Thanks to Computational Fluid Dynamics (CFD), databases can be created without costly experiments, whereas the use of unstructured grids in combination with parallel processing makes the whole task easy and fast to accomplish. In this paper, a procedure that builds up a database for gas-turbine fault diagnosis is demonstrated. Advanced CFD tools that operate concurrently on multi-processor platforms are used. The so-prepared database contributes to the identification of faults through the analysis of the unsteady pressure signals that correspond to hypothetical sensors located in the inter-blade region. The pressure signals are post-processed in a similar way to the one experimentalists employ for fast-response pressure measurements. Symptoms related to displaced and/or twisted blades in an industrial high-speed compressor cascade, at design and off-design operating conditions, are analyzed.	en
heal.publisher	ASME, Fairfield, NJ, United States	en
heal.journalName	American Society of Mechanical Engineers (Paper)	en
dc.identifier.issue	GT	en