اندازه‌گيري فشار در مقطع سه‌بعدي پره توربين باد

STATIC SURFACE PRESSURE MEASUREMENT ON A SECTION OF A WIND TURBINE BLADE

An ext ensiv e experiment al investigation has been condu ct ed to study the ae rodynamic behavior of a wind turbine blade. A three dim ensional wing was fabricated using th e existing wind turbine blade cross section . The wing was tested at angl es of attack of -5 to 25 degr ees and at various Reynolds numbers in the Shiraz subsonic wind t unnel. Experim ental results, such as stat ic pressure distribution , lift coefficient, wake and 3-D flow effects, are compared with the 2-D t est results. The compari son shows that 3-D flow effects reduce both wing lift coefficient and blade performance, with respect to the 2-D results, while th e stall angl e increases considera bly.