Three-Component LDV Measurements in the Wake of a Compressor Cascade With Flow Separation

Autor:	J. R. Carlson, T. M. Caruso, Garth V. Hobson
Rok vydání:	2008
Předmět:	Physics Turbine blade business.industry Turbulence Mechanical Engineering Reynolds number Mechanics Wake law.invention Vortex Boundary layer symbols.namesake Flow separation Optics Cascade law symbols business
Zdroj:	Journal of Turbomachinery. 130
ISSN:	1528-8900 0889-504X
DOI:	10.1115/1.2364883
Popis:	Measurements were taken of the vortex system and turbulent flow that resulted from the interaction between a stator blade and the approaching end-wall boundary layer in a linear cascade of compressor blades. Data were taken at a Reynolds number based on blade chord of and 640000. Five-hole pressure measurements were conducted upstream and downstream of the blade row. The approaching boundary layer was also characterized with the laser-Doppler velocimeter. Downstream three-component laser-Doppler velocimetry surveys were conducted at three streamwise stations to map the location and velocity characteristics of the wake and vortex system. Results clearly showed the extent of the vortex emanating from the separation of the boundary layer on the suction side of the blade. Finally all components of mean flow velocity and turbulence are documented for the last survey station. These data will form challenging test case for numerical code validation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e20721cb10270b8d0286ca4bf04b70e0 https://doi.org/10.1115/1.2364883 Zobrazit plný text záznamu