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Parallel CFD tool to produce faulty blade signatures for diagnostic purposes

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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


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