Three-component LDV measurements of corner vortices over second-generation, controlled-diffusion, compressor blades in cascade
Approved for public release, distribution unlimited === A detailed investigation of the three-dimensional flow in a cascade of second-generation controlled-diffusion compressor stator blades, at off-design inlet-flow angle, is reported. Three-component fiber-optic Laser-Doppler Velocimetry (LDV) sur...
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Monterey, California. Naval Postgraduate School
2012
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ndltd-nps.edu-oai-calhoun.nps.edu-10945-17832017-05-24T16:07:20Z Three-component LDV measurements of corner vortices over second-generation, controlled-diffusion, compressor blades in cascade Caruso, Todd M. Hobson, Garth V. Aeronautical Engineering Approved for public release, distribution unlimited A detailed investigation of the three-dimensional flow in a cascade of second-generation controlled-diffusion compressor stator blades, at off-design inlet-flow angle, is reported. Three-component fiber-optic Laser-Doppler Velocimetry (LDV) surveys were made to fully map the flow at one plane upstream of the cascade and at three planes downstream. The measurements were performed at an inlet flow Mach number of 0.22 and a Reynolds number, based on chord length, of 640,000. The inlet surveys documented the approaching flow field in detail to establish the inlet boundary conditions for numerical simulations. At the downstream planes, total velocity distributions, total turbulence kinetic energy distributions, secondary flow velocity vector and contour plots are presented. The downstream surveys confirmed the existence of secondary flow vortices produced by the end wall. Surface vector and contour plots of non-dimensional velocity and total turbulence kinetic energy detail the complex flow field, including the size and location of the corner vortex system US Marine Corps (USMC) author 2012-03-14T17:33:04Z 2012-03-14T17:33:04Z 2001-09 Thesis http://hdl.handle.net/10945/1783 640958977 This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted. xii, 92 p. ; ills.: application/pdf Monterey, California. Naval Postgraduate School |
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Approved for public release, distribution unlimited === A detailed investigation of the three-dimensional flow in a cascade of second-generation controlled-diffusion compressor stator blades, at off-design inlet-flow angle, is reported. Three-component fiber-optic Laser-Doppler Velocimetry (LDV) surveys were made to fully map the flow at one plane upstream of the cascade and at three planes downstream. The measurements were performed at an inlet flow Mach number of 0.22 and a Reynolds number, based on chord length, of 640,000. The inlet surveys documented the approaching flow field in detail to establish the inlet boundary conditions for numerical simulations. At the downstream planes, total velocity distributions, total turbulence kinetic energy distributions, secondary flow velocity vector and contour plots are presented. The downstream surveys confirmed the existence of secondary flow vortices produced by the end wall. Surface vector and contour plots of non-dimensional velocity and total turbulence kinetic energy detail the complex flow field, including the size and location of the corner vortex system === US Marine Corps (USMC) author |
author2 |
Hobson, Garth V. |
author_facet |
Hobson, Garth V. Caruso, Todd M. |
author |
Caruso, Todd M. |
spellingShingle |
Caruso, Todd M. Three-component LDV measurements of corner vortices over second-generation, controlled-diffusion, compressor blades in cascade |
author_sort |
Caruso, Todd M. |
title |
Three-component LDV measurements of corner vortices over second-generation, controlled-diffusion, compressor blades in cascade |
title_short |
Three-component LDV measurements of corner vortices over second-generation, controlled-diffusion, compressor blades in cascade |
title_full |
Three-component LDV measurements of corner vortices over second-generation, controlled-diffusion, compressor blades in cascade |
title_fullStr |
Three-component LDV measurements of corner vortices over second-generation, controlled-diffusion, compressor blades in cascade |
title_full_unstemmed |
Three-component LDV measurements of corner vortices over second-generation, controlled-diffusion, compressor blades in cascade |
title_sort |
three-component ldv measurements of corner vortices over second-generation, controlled-diffusion, compressor blades in cascade |
publisher |
Monterey, California. Naval Postgraduate School |
publishDate |
2012 |
url |
http://hdl.handle.net/10945/1783 |
work_keys_str_mv |
AT carusotoddm threecomponentldvmeasurementsofcornervorticesoversecondgenerationcontrolleddiffusioncompressorbladesincascade |
_version_ |
1718452756155465728 |