کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6764336 1431579 2018 31 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the actual power coefficient by theoretical developing of the diffuser flange of wind-lens turbine
ترجمه فارسی عنوان
در مورد ضریب قدرت واقعی با توسعه نظری از فلنج منتشر کننده توربین بادی لنز
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
The wind-lens technology attracts extensive attention due to its promising performance. A numerical study was carried out to investigate the effects of diffuser flange inclination angle (φ) and the diffuser flange depth inside the exit of the diffuser (hi/Drotor) on the wind-lens turbine system performance. Besides, the effect of wind speed is taken into consideration. φ is changed through the range of −15° to 15° with a step of 5° in both forward and backward directions. Also, hi/Drotor is changed through the range of 0-0.06 with a step of 0.02 and wind speed of (8 and 10 m/s). A CFD model was developed and solved by using ANSYS FLUENT 16.2. Such model was validated by using previous published experimental results with good agreement and maximum deviation of 2.4%. It was found that the percentage increase of Cp at different values of φ was increased by augmenting of λ. Thus, it is emphasized that the maximum percentage increase of Cp of 28% was obtained at λ of 5.6 and φ of 10°. Moreover, a theoretical correction of Cp was performed to achieve that the actual power coefficient Cpact never exceeds Betz limit.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 125, September 2018, Pages 295-305
نویسندگان
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