Three-dimensional CFD analysis of undeformed and deformed 500 kW horizontal-axis wind turbine blade

Savanur, RA and Sharanappa, Sajjan V and Mudkavi, Vidyadhar Y (2009) Three-dimensional CFD analysis of undeformed and deformed 500 kW horizontal-axis wind turbine blade. Technical Report. NAL.

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Abstract

Unsteady three-dimensional Reynolds averaged Navier-Stokes solver (IMPRANS) is used for the simulated quasi-steady flows around wind turbine blades. The RANS solver is based on an implicit finite volume nodal point scheme wherein a control volume is formed by joining the centroids of the neighboring cells around a nodal point in' the computational domain. The algebraic eddy viscosity model due to Baldwin and Lomax is used for turbulence closure and the governing equations for the moving domain are solved using the dual time stepping procedure in an inertial frame of reference. The NAL's 500 kW horizontal axis wind turbine blade, consisting of aerofoil having high lift to drag ratio and early stall characteristics designed at CTFD Division of NAL, is analyzed by using the IMPRANS solver. The computed aerodynamic power in this case i.e. 570 kW for the case of wind speed of 12 m/s is slightly high but still within the range of design power. Aerodynamic power is also computed using both Panel Code and 3D IMPRANS for different wind speeds. In comparison to Panel Code results 3D IMPRANS results are better.

Item Type: Proj.Doc/Technical Report (Technical Report)
Uncontrolled Keywords: Unsteady flow,Viscous flow,wind turbine,Aerodynamic power
Subjects: ENGINEERING > Fluid Mechanics and Thermodynamics
Division/Department: Computational and Theoretical Fluid Dynamics Division, Computational and Theoretical Fluid Dynamics Division , Computational and Theoretical Fluid Dynamics Division
Depositing User: Mr. Guest NAL
Date Deposited: 28 Jul 2010 11:50
Last Modified: 28 Jul 2010 11:50
URI: http://nal-ir.nal.res.in/id/eprint/8834

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