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http://dx.doi.org/10.3795/KSME-B.2005.29.8.887

Effect of Incidence Angle on the Wake Turbulence of a Turbine Rotor Blade  

Chang, Sung-Il (STX 조선)
Lee, Sang-Woo (금오공과대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.29, no.8, 2005 , pp. 887-894 More about this Journal
Abstract
This paper describes effects of incidence angle on the wake turbulent flow of a high-turning turbine rotor blade. For three incidence angles of -5, 0 and 5 degrees, energy spectra as well as profiles of mean velocity magnitude and turbulence intensity at mid-span are reported in the wake. Vortex shedding fiequencies are obtained from the energy spectra. The result shows that as the incidence angle changes from -5 to 5 degrees, the suction-side wake tends to be widened and the deviation angle is increased. Strouhal numbers based on the shedding fiyequencies have a nearly constant value, regardless of the tested incidence angles.
Keywords
Turbine Blade; Wake; Incidence Angle; Energy Spectrum; Vortex Shedding Frequency;
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Times Cited By KSCI : 1  (Citation Analysis)
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