تاثیر زاویه مخروطی بر عملکرد آیرودینامیکی و آلودگی صوتی توربین بادی محور افقی

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

چکیده
آلودگی صوتی به ویژه نویز فرکانس پایین توربین‌های بادی، به عنوان یک چالش زیست‌محیطی شناخته می‌شود که می‌تواند تاثیر منفی بر سلامت انسان داشته باشد. در این پژوهش، تاثیر زاویه مخروطی پره (o0 تا o10) بر نویز فرکانس پایین یک توربین بادی محور افقی بررسی شد. برای این منظور، ابتدا جریان اطراف توربین در محدوده سرعت باد 5 تا 10 متر بر ثانیه با استفاده از معادلات RANS و مدل توربولانسی SST شبیه‌سازی گردید. در ادامه، نویز توربین ناشی از منابع روی پره و اطراف آن با استفاده از معادله فاکس ویلیامز-هاوکینگز محاسبه شد. نتایج نشان داد با تغییر زاویه مخروطی پره در محدوده o0 تا o10، توان توربین کمتر از %5 تغییر می‌کند، اما این تغییر زاویه تاثیر قابل توجهی بر اندازه و الگوی انتشار نویز فرکانس پایین توربین در محدوده سرعت باد بررسی شده دارد. همچنین مشخص شد که در زاویه مخروطی پره o5، علاوه بر افزایش توان تولیدی، نویز بیشینه نیز نسبت به توربین صفحه‌ای (زاویه مخروطی o0) کاهش می‌یابد.

کلیدواژه‌ها


عنوان مقاله English

The Effect of Cone Angle on the Aerodynamic Performance and Noise Pollution of a Horizontal Axis Wind Turbine

نویسنده English

seyyed Ahmad Nourbakhsh 2
2 Department of Mechanical Engineering, University of Tehran, Tehran, Iran
چکیده 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

Wind Turbine
Noise Pollution
Numerical Simulation
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دوره 5، شماره 3
پاییز 1404
صفحه 403-420

  • تاریخ دریافت 16 مرداد 1405
  • تاریخ بازنگری 23 مرداد 1405
  • تاریخ پذیرش 27 مرداد 1405