فصلنامه
نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشکده مهندسی مکانیک، دانشگاه صنعتی اراک، اراک، ایران
2 گروه تبدیل انرژی، دانشکده مهندسی مکانیک، دانشگاه تهران، تهران، ایران
کلیدواژهها
عنوان مقاله English
نویسنده English
Noise pollution, particularly the low-frequency noise generated by wind turbines, is recognized as an environmental challenge that may have adverse effects on human health. In this study, the effect of blade cone angle (0°–10°) on the low-frequency noise of a horizontal-axis wind turbine was investigated. To this end, the flow field around the turbine was first simulated for wind speeds ranging from 5 to 10 m/s using the Reynolds-Averaged Navier–Stokes (RANS) equations coupled with the Shear Stress Transport (SST) turbulence model. Subsequently, the turbine noise, generated by sources located on and around the blades, was predicted using the Ffowcs Williams–Hawkings (FW–H) equation. The results showed that varying the blade cone angle from 0° to 10° changed the turbine power output by less than 5%; however, it had a significant influence on the propagation of low-frequency noise. It was also found that at a blade cone angle of 5°, the turbine not only achieved higher power output but also exhibited a lower peak sound pressure level than the planar turbine (0° blade cone angle 0°).
کلیدواژهها English
