Unstaedy Boundary Layer Measurement over an Airfoil in Plunging Motion

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Abdollahi, Rezvan | 2011

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 42195 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Soltani, Mohammad Reza
Abstract:
An experimental investigation of unsteady boundary layer over a wind turbine blade conducted in a subsonic wind tunnel. The experiment performed at different positions along the airfoil chord. Model was oscillated with amplitude of ±5 cm. Reynolds number, based on airfoil chord, ranged 3˟105 upto 6.5˟105 and the reduced frequency ranged from 0.0055 to 0.0981. Velocity profile measured with a total pressure rake. The data were reduced via a low-pass filter. Increasing the reduced frequency, the velocity profile increases the level on turbulence fluctuation and becomes more attached to the surface.
Keywords:
Boundary Layer ; Wind Turbine ; Reduced Frequency ; Plunging ; Wind Tunnel

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