TURBULENCE ANALYSIS ON A 5KW HORIZONTAL AXIS WIND TURBINE USING CFD
J. Jaisy
PG student: Department of Mechanical Engineering, Regional centre, Anna university Tirunelveli Region Tirunelveli, India
Dr. S. Rajakumar
Head of the Department: Department of Mechanical Engineering, Regional centre, Anna university Tirunelveli Region Tirunelveli, India
Receiving Date:
2015-12-29
Acceptance Date:
2016-01-27
Publication Date:
2016-02-24
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Abstract
This work is devoted to the analysis of turbulence around a 5KW horizontal axis wind turbine.
Here, A two dimensional S809 airfoil with three different chord lengths which is obtained
through mathematical calculations was designed using CREO. The S809 airfoil which is a 21%
chord thickness airfoil utilized in horizontal-axis wind turbine. It is developed for stallcontrolled turbine rotors and also was designed to achieve a sustained maximum lift with
minimal sensitivity to surface roughness. Turbulent analyses of the airfoils were carried out in
ANSYS FLUENT using Spalart-Allmaras turbulent model at angle of attack of five and wind
velocity 8 m/s. Turbulence viscosities, effective turbulence and viscosity ratio of the airfoils were
predicted and the results are compared. The results indicate that the aerodynamic behavior of
the airfoil can be strongly affected by the turbulence level both qualitatively and quantitatively.
Keywords:
Effective turbulence; Horizontal axis wind turbine; Turbulence viscosity; Aerodynamic behavior; S809 airfoil.
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