مطالعه عددی تاثیر عملگر کنترل جریان به شیوه دمش-مکش بر ضرایب آیرودینامیکی پره توربین باد محور افقی کیلوواتی

نوع مقاله : یادداشت فنی

نویسندگان

دانشکده مهندسی مکانیک - دانشگاه تربیت مدرس

چکیده

در این پژوهش، تأثیر استفاده از عملگرهای دمشی‌مکشی[1] بر عملکرد آیرودینامیکی پره توربین بادی ان-آر-ای-ال  فاز 6[2] با حل عددی 3 بعدی مورد بررسی قرار گرفته است. برای انجام شبیه‌سازی‌ها از نرم‌افزار انسیس فلوئنت[3] استفاده شده و تحلیل‌ها بر اساس تغییرات ضریب جریان جت در شرایط مختلف سرعت باد (7، 10، 15 و 20 متر بر ثانیه) انجام پذیرفته است. نتایج حاکی از آن است که در سرعت 7 متر بر ثانیه، استفاده از عملگر دمشی‌مکشی تأثیر مطلوبی ندارد. اما با افزایش سرعت باد به 10 متر بر ثانیه، ضریب جریان جت با شدت نسبی 02/0 و 03/0 بهبود قابل ‌توجهی در عملکرد توربین ایجاد می‌کند. در سرعت 15 متر بر ثانیه، ضریب جریان 01/0 موجب افزایش 33 درصدی در عملکرد توربین می‌شود و همچنین تأخیر در بروز واماندگی دینامیکی مشاهده می‌گردد. در سرعت 20 متر بر ثانیه نیز  با ضریب جریان 03/0 افزایش 8 درصدی عملکرد مشاهده می‌شود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Numerical Study of the Effect of the Co-Flow Jet on the Aerodynamic Coefficients of a Kilowatt Horizontal Axis Wind Turbine Blade

نویسندگان [English]

  • Fatemeh Masoudi
  • Saeed Karimian Aliabadi
Faculty of Mechanical Engineering, Tarbiat Modares University
چکیده [English]

In this study, numerical investigation is conducted on using Co-flow jets in the wind turbine blades. 3D steady simulations are performed using k-kl-ω turbulence model. Different jet flow coefficients ranging from 0.00 to 0.03 are applied at wind speeds of 7, 10, 15, and 20 m/s to evaluate the influence of suction and blowing slots located near the trailing edge of the blade. The results indicate that CFJ has negligible impact at very low wind speeds (7 m/s), but it provides substantial performance improvements at moderate to high wind speeds. At 10 m/s, CFJ coefficients of 0.02 and 0.03 enhance the net power coefficient significantly. At 15 m/s, the use of CFJ with Cμ = 0.01 results in a 33% increase in turbine performance and successfully delays the onset of dynamic stall. At 20 m/s, a further improvement of 8% is observed with Cμ = 0.03. Overall, the study demonstrates that CFJ is a highly effective technique for improving aerodynamic efficiency and power generation in kilowatt-scale wind turbines, particularly in regions with medium to strong wind conditions.

کلیدواژه‌ها [English]

  • Kilowatt wind turbine
  • Jet flow coefficient
  • Co-Flow Jet (CFJ)
  • dynamic stall
  • aerodynamic coefficients

مراجع

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