A Review on Modeling of Bionic Flow Control Methods for Large-Scale Wind Turbine Blades

Zhang, Mingming; Zhang, Yinan; Cai, Chang; Cao, Hongchao

doi:10.1007/s11630-021-1444-1

Cited by 8 publications

(2 citation statements)

References 81 publications

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“…These findings inspired engineering studies using similar serrations designs on traditional airfoils and rotor blades to test their functionality as a passive flow control device. In the post-stall regime, multiple studies show that the LES can effectively improve the aerodynamic performance of the stalled airfoil by increasing lift, reducing drag, and reducing the fluctuation of aerodynamic forces [78][79][80] . Wenzen et al and Rao and Hiu 81,82 studied the Reynolds number dependency of LES and found that they are effective as post-stall flow control devices for Re ≥ 40, 000.…”

Section: Avian Flow Controlmentioning

confidence: 99%

Aerial and aquatic biological and bioinspired flow control strategies

et al. 2023

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Flow control is the attempt to favorably modify a flow field’s characteristics compared to how the flow would have developed naturally along the surface. Natural flyers and swimmers exploit flow control to maintain maneuverability and efficiency under different flight and environmental conditions. Here, we review flow control strategies in birds, insects, and aquatic animals, as well as the engineered systems inspired by them. We focus mainly on passive and local flow control devices which have utility for application in small uncrewed aerial and aquatic vehicles (sUAVs) with benefits such as simplicity and reduced power consumption. We also identify research gaps related to the physics of the biological flow control and opportunities for device development and implementation on engineered vehicles.

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Section: Avian Flow Controlmentioning

confidence: 99%

Aerial and aquatic biological and bioinspired flow control strategies

et al. 2023

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“…On the other hand, a number of scholars have begun to apply bionics to the design of engineering applications. The bionic design focuses on the effective integration of structure and function, and the purpose is to make the design object have the functions of similar structures [ 18 , 19 , 20 ]. Through studying the vibrissae of harbor seals, compared with cylinders, the scholars found that their particular three-dimensional structures uniquely impact their vibration response and the flow characteristics of the surrounding flow field, which plays a remarkable flow control in suppressing vortex-induced vibration and reducing lift drag fluctuation.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Aerodynamic Characteristics of Downwind Bionic Tower Wind Turbine

Yang,

Sun,

Yang

et al. 2024

Biomimetics

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The vibrissae of harbor seals exhibit a distinct three-dimensional structure compared to circular cylinders, resulting in a wave-shaped configuration that effectively reduces drag and suppresses vortex shedding in the wake. However, this unique cylinder design has not yet been applied to wind power technologies. Therefore, this study applies this concept to the design of downwind wind turbines and employs wind tunnel testing to compare the wake flow characteristics of a single-cylinder model while also investigating the output power and wake performance of the model wind turbine. Herein, we demonstrate that in the single-cylinder test, the bionic case shows reduced turbulence intensity in its wake compared to that observed with the circular cylinder case. The difference in the energy distribution in the frequency domain behind the cylinder was mainly manifested in the near-wake region. Moreover, our findings indicate that differences in power coefficient are predominantly noticeable with high tip speed ratios. Furthermore, as output power increases, this bionic cylindrical structure induces greater velocity deficit and higher turbulence intensity behind the rotor. These results provide valuable insights for optimizing aerodynamic designs of wind turbines towards achieving enhanced efficiency for converting wind energy.

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