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
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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 (Ï) 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. Ï is changed through the range of â15° 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 10â¯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 Ï 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 Ï 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
Journal: Renewable Energy - Volume 125, September 2018, Pages 295-305
نویسندگان
Hasim A. Heikal, Osayed S.M. Abu-Elyazeed, Mohamed A.A. Nawar, Youssef A. Attai, Maged M.S. Mohamed,