Wang Hongliang, Li Ye, Pröbsting Stefan, Zheng Xiaobo, Hu Qiuhao, Chen Di, Liu Hao, Wu Xiaoni
Multifunction Towing Tank Laboratory, School of Naval Architecture, Ocean & Civil Engineering (NAOCE), Shanghai Jiao Tong University (SJTU), Shanghai 200240, People's Republic of China.
State Key Laboratory of Ocean Engineering, SJTU, Shanghai 200240, People's Republic of China.
Bioinspir Biomim. 2020 Sep 14;15(6):066001. doi: 10.1088/1748-3190/abab67.
This work introduces a new biomimetic design for the well-known Wells turbine to enhance its efficiency for harvesting energy. In this paper, a biomimetic Wells turbine inspired by the geometry of hawkmoth wings is presented. Aerodynamics of both the bio-inspired design and the conventional design are investigated through computational fluid dynamics. Non-dimensional performance indicators of the bio-inspired design are compared to those of the conventional turbine, including the torque coefficient, the pressure drop coefficient, the turbine efficiency. The velocity and pressure distribution as well as the vortices shed from the blades are illustrated to understand the differences in flow phenomena. The results indicate that the biomimetic design changes the flow field and can attain a higher peak efficiency, especially at high angle of attack. Finally, the performance of blades with various aspect ratios is investigated to better understand the biomimetic design.
这项工作为著名的威尔斯涡轮机引入了一种新的仿生设计，以提高其能量收集效率。本文提出了一种受鹰蛾翅膀几何形状启发的仿生威尔斯涡轮机。通过计算流体动力学研究了仿生设计和传统设计的空气动力学。将仿生设计的无量纲性能指标与传统涡轮机的指标进行比较，包括扭矩系数、压降系数、涡轮效率。展示了速度和压力分布以及叶片脱落的涡旋，以了解流动现象的差异。结果表明，仿生设计改变了流场，能够获得更高的峰值效率，尤其是在大攻角时。最后，研究了具有不同展弦比的叶片性能，以更好地理解仿生设计。
