Aerodynamic performance of a vawt by trailing edge jet on the blade
WANG Jian-ming
TAN Yong-zhi
WEN Xue-bing
SHEN Zhen-hua
Abstract：The rotor of wind turbine is a driving mechanism , and it is the important component of wind tur-bine .Aerodynamic performance of a wind turbine lies on airfoil of the blade .Keeping the baseline airfoil of NA-CA0022 usually used in vertical axis wind turbine , we made a 1 mm wide slot in the tail of blade in order to get better performance of the wind turbine .Vertical axis wind turbines were simulated numerically , the k-ωSST turbulence model and SIMPLE algorithm were chosen , and sliding mesh technique was applied .The coefficient of power of the VAWT by trailing edge blowing of the blade is larger , and the range with better aerodynamic per-formance widens.When the tip speed ratio equals 2.06, the coefficient of power is largest .The largest CP e-quals 22.4%, which increases by 15.5% in contrast to baseline case .The mechanism of optimum is that the passive jet from the slot can alter the coefficient of pressure on the surface of blade at large attack angle .
Keywords：vertical axis wind turbine ( VAWT )aerodynamic performancetrailing edge jetcoefficient of pressure
Publication Date：2013-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 386-392 )