Sangam: A Confluence of Knowledge Streams

Three-dimensional fiber-optic LDV measurements in the endwall region of a linear cascade of controlled-diffusion stator blades

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dc.contributor Hobson, Garth V.
dc.contributor Shreeve, Raymond P.
dc.contributor Naval Postgraduate School
dc.contributor Naval Postgraduate School
dc.contributor Aeronautical Engineering
dc.creator Dober, David Michael
dc.date 2012-11-29T16:21:31Z
dc.date 2012-11-29T16:21:31Z
dc.date 1993-03
dc.date.accessioned 2022-05-19T07:43:32Z
dc.date.available 2022-05-19T07:43:32Z
dc.identifier http://hdl.handle.net/10945/24238
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/100160
dc.description Measurements were taken of the vortex system that results from the interaction between a stator blade tip and the approaching endwall boundary layer in a linear cascade of controlled-dif fusion compressor stator blades. Measurements were taken at Reynolds numbers based on stator blade chord of 240000 and 711000. Total pressure measurements were first conducted upstream and downstream of the controlled-dif fusion stator blades. The approaching boundary layer was characterized and the downstream vortex locations were approximated. Upstream and downstream three-dimensional fiber-optic LDV surveys viere then conducted to observe the velocity profiles of the approaching boundary layer and to map the location and velocity characteristics of the downstream vortex system. Results clearly show the effect that the overall secondary flow in the blade passage has on the location of the two oppositely rotating vortices. The downstream flow characteristics were also shown to be periodic.
dc.description http://archive.org/details/threedimensional00dobe
dc.description Lieutenant, United States Navy
dc.description Approved for public release; distribution is unlimited.
dc.format 115 p.
dc.format application/pdf
dc.language en_US
dc.publisher Monterey, California: Naval Postgraduate School
dc.rights This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
dc.subject Laser Doppler Velocimetry
dc.subject Fiber-Optic LDV
dc.subject Cascade Wind Tunnel
dc.subject Controlled-Diffusion Blades
dc.subject Endwall Region
dc.subject Vortices
dc.subject Secondary Flow
dc.title Three-dimensional fiber-optic LDV measurements in the endwall region of a linear cascade of controlled-diffusion stator blades
dc.type Thesis


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