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Numerically and Experimentally Verified Design of a Small Wind Turbine with Injection Molded Blade
Processes ( IF 3.5 ) Pub Date : 2021-04-28 , DOI: 10.3390/pr9050776
Byunghui Kim , Sang-June Park , Seokyoung Ahn , Myung-Gon Kim , Hyung-Gun Yang , Ho-Seong Ji

Although mega-watt class onshore and offshore wind power systems are used to generate power due to their cost-effectiveness, small wind power systems are important for household usages. Researchers have focused on aerodynamic characteristics as a conceptual design from their previous studies on Archimedes spiral wind turbines. Here, we verified the design of a small wind turbine AWM-750D (100 W capacity) via both numerical simulation and experimentation. We used commercial code ANSYS CFX for numerical simulation and compared turbulence models and surface roughness for determining the performance. To obtain reliable and robust blades, we analyzed the effective manufacturing method with Moldflow. Through a test with an open-suction type atmospheric boundary layer wind tunnel, we varied wind speed from 4.0 m/s to the rated value of 12.5 m/s and obtained 106 W, equivalent to a power coefficient of 0.205. In addition, we compared the numerical and experimental power vs. rotational speed and found the former is 6.5% lower than the latter. In this study, we proved that numerical simulations can act as design verification methods to predict wind turbine performances and reliable manufacturing. Through our research, we provided the prototype of a small wind turbine with 100 W to act as an efficient electric power supplier for households and also the stable manufacturing process for complex spiral blades using injection molding.

中文翻译:

注塑叶片小型风力发电机的数值和实验验证设计

尽管由于具有成本效益,兆瓦级的陆上和海上风力发电系统可用于发电,但是小型风力发电系统对于家庭使用而言非常重要。研究人员从先前对阿基米德螺旋风轮机的研究中就将空气动力学特性作为概念设计进行了研究。在这里,我们通过数值模拟和实验验证了小型风力发电机AWM-750D(容量为100 W)的设计。我们使用商业代码ANSYS CFX进行数值模拟,并比较了湍流模型和表面粗糙度来确定性能。为了获得可靠且坚固的叶片,我们使用Moldflow分析了有效的制造方法。通过使用开放式大气边界层风洞进行的测试,我们将风速从4.0 m / s更改为额定值12。5 m / s并获得106 W,相当于0.205的功率系数。此外,我们将数值和实验功率与转速进行了比较,发现前者比后者低6.5%。在这项研究中,我们证明了数值模拟可以作为预测风力涡轮机性能和可靠制造的设计验证方法。通过我们的研究,我们提供了100 W小型风力涡轮机的原型,可以用作家庭的有效电力供应商,并且可以通过注塑成型为复杂的螺旋叶片提供稳定的制造工艺。我们证明了数值模拟可以作为预测风力涡轮机性能和可靠制造的设计验证方法。通过我们的研究,我们提供了100 W小型风力涡轮机的原型,可以用作家庭的有效电力供应商,并且可以通过注塑成型为复杂的螺旋叶片提供稳定的制造工艺。我们证明了数值模拟可以作为预测风力涡轮机性能和可靠制造的设计验证方法。通过我们的研究,我们提供了100 W小型风力涡轮机的原型,可以用作家庭的有效电力供应商,并且可以通过注塑成型为复杂的螺旋叶片提供稳定的制造工艺。
更新日期:2021-04-29
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