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Performance optimization of a subsonic Diffuser-Collector subsystem using interchangeable geometries

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dc.contributor.authorBoehm, Brian Patricken
dc.contributor.committeechairLowe, K. Todden
dc.contributor.committeememberNg, Wing Faien
dc.contributor.committeememberDancey, Clinton L.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-07-17T12:56:53Zen
dc.date.available2014-07-17T12:56:53Zen
dc.date.issued2013-01-09en
dc.description.abstractA subsonic wind tunnel facility was designed and built to test and optimize various diffuser-collector box geometries at the one-twelfth scale.  The facility was designed to run continuously at an inlet Mach number of 0.42 and an inlet hydraulic diameter Reynolds number of 340,000. Different combinations of diffusers, hubs, and exhaust collector boxes were designed and evaluated for overall optimum performance. Both 3-hole and 5-hole probes were traversed into the flow to generate multiple diffuser inlet and collector exit performance profile plots. Surface oil flow visualization was performed to gain an understanding of the complex 3D flow structures inside the diffuser-collector subsystem. The cutback radial hardware was found to increase the subsystem pressure recovery by over 10% from baseline resulting in an approximate 1% increase in gas turbine power output.en
dc.description.degreeMaster of Scienceen
dc.format.mediumETDen
dc.identifier.othervt_gsexam:126en
dc.identifier.urihttp://hdl.handle.net/10919/49589en
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectDiffuser-Collector Subsystemen
dc.subjectGas Turbine Exhaust Collectoren
dc.subjectExhaust Collector Boxen
dc.subjectTilted Diffuseren
dc.subjectSecondary Flowen
dc.subjectRadial Diffen
dc.titlePerformance optimization of a subsonic Diffuser-Collector subsystem using interchangeable geometriesen
dc.typeThesisen
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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