TY - JOUR
ID - 67326
TI - INFLUENCE OF A TRAILING EDGE FLAP ON A VERTICAL AXIS WIND TURBINE PERFORMANCE
JO - ERJ. Engineering Research Journal
JA - ERJM
LA - en
SN - 1110-1180
AU - Mousa, G. A. Z.
AU - Abd Elmotalip, A.
AU - Moustafa, Gamal H.
AD - Faculty of Engineering, Suez Canal University
Y1 - 2010
PY - 2010
VL - 33
IS - 3
SP - 245
EP - 250
KW - Wind energy
KW - Wind Turbines
KW - and Power Augmentation
DO - 10.21608/erjm.2010.67326
N2 - The present research was carried out to summarize the effect of an attached flap at the trailing edge on a vertical axis wind turbine performance. Two models were tested in a wide range of initial flow velocity and blade pitch angles. The first model has two blades, and in the second model four blades were used. The pitch angle was varied from 15o to 60o. The torque and power coefficients were measured. A comparison with data obtained with the model without flaps is given. It is found that the torque and power coefficients increase with increasing the pitch angle up to 45o and then decrease at the a higher value of the pitch angle. The attached flap reduces the flow separation, enhances lift, captures more wind energy, increases the rotor speed and hence increases the torque and power coefficients. The flap at a position L/Cf= 0.75 for the rotor has a pitch angle of 45o gives an optimum value of the power and torque coefficients compared to the other values of L/Cf . At these conditions, an improvement of 7.14 % is achieved (for the rotor has two blades), and of 12.7 % (for the rotor has four blades) compared to the rotor without flaps.
UR - https://erjm.journals.ekb.eg/article_67326.html
L1 - https://erjm.journals.ekb.eg/article_67326_1f65faae59e5287dda71768eccd6b459.pdf
ER -