Hamid Hossam, Abd El Maksoud Rafea Mohamed
Mechanical Power Engineering Department, Faculty of Engineering - Mattaria, Helwan University, Cairo 11718, Egypt.
Heliyon. 2023 Jun 7;9(6):e17036. doi: 10.1016/j.heliyon.2023.e17036. eCollection 2023 Jun.
The seashell-shaped wind turbine (spiral wind turbine SWT), a brand-new form of the horizontal axis wind turbine, is intended for metropolitan use. SWTs have the additional advantage of being installed anywhere without considering their surroundings, as they do not need to be located facing the wind direction. The present work introduces various designs of the rotor of the seashell wind turbine to achieve the greatest performance. Two types of turbine spiral profiles (logarithmic and Archimedean) are investigated with changing the turbine opening angle (). Utilizing the turbulence model SST , the equations of Reynolds-averaged Navier-Stokes (RANS) are solved and hence the power coefficient () is calculated. A comprehensive comparison of the findings for both configurations indicates that the turbine of the Archimedean spiral profile with of 60° generates the best performance. The seashell wind turbine with the Archimedean profile at a of 60° has a maximum = 0.266825 at λ = 2.5. The seashell wind turbine with the Archimedean profile has the best performance than traditional Archimedes wind turbines which were studied previously by other researchers. The maximum percentage increase in the of the seashell turbine with the Archimedean profile compared to the conventional Archimedes turbine equals 14.52%.
贝壳形风力涡轮机（螺旋风力涡轮机SWT）是一种全新形式的水平轴风力涡轮机，适用于城市环境。SWT的另一个优点是可以安装在任何地方，无需考虑周围环境，因为它们不需要面向风向安装。本研究介绍了贝壳形风力涡轮机转子的各种设计，以实现最佳性能。研究了两种涡轮螺旋轮廓（对数和阿基米德），并改变了涡轮开口角度（）。利用SST湍流模型，求解雷诺平均纳维-斯托克斯（RANS）方程，从而计算功率系数（）。对两种配置的结果进行综合比较表明，阿基米德螺旋轮廓、开口角度为60°的涡轮机性能最佳。开口角度为60°的阿基米德轮廓贝壳形风力涡轮机在λ = 2.5时的最大功率系数= 0.266825。与其他研究人员之前研究的传统阿基米德风力涡轮机相比，具有阿基米德轮廓的贝壳形风力涡轮机性能最佳。具有阿基米德轮廓的贝壳形涡轮机的功率系数相比传统阿基米德涡轮机的最大百分比增幅为14.52%。
