Effects of setting angle and chord length on performance of four blades bionic wind turbine

Yang, Zong-Xiao; Li, G. S.; Song, Lei; Bai, Yue

doi:10.1088/1755-1315/93/1/012041

Cited by 5 publications

(5 citation statements)

References 10 publications

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“…The field of bionics has widened and attracted the attention of several experts [ 8 , 9 , 10 , 11 , 12 , 13 ]. For instance, the sinusoidal tubercles that grow on the pectoral fins of whales allow them to swim at high speeds in seawater.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Energy Loss and Performance Characteristics in a Centrifugal Pump Based on Sinusoidal Tubercle Volute Tongue

Lin

Wang

Song

et al. 2023

Entropy

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The energy loss inside a centrifugal pump has a significant effect on its performance characteristics. Based on the structural characteristics of the humpback pectoral fin, a new tongue was designed to improve the performance of the centrifugal pump. The influence of three sinusoidal tubercle volute tongues (STVT) and one original volute tongue (OVT) on energy dissipation using the enstrophy analysis method was investigated. To accomplish this, the pressure fluctuations and performances of four centrifugal pumps were analyzed. The results indicate that enstrophy is primarily distributed at the impeller outlet and near the tongue. The total enstrophy of the profiles of STVT was smaller than that of the profiles of OVT. This difference was more obvious near the tongue. The reductions in the total enstrophy of the pumps were 8% (STVT−1), 8.2% (STVT−2), and 9% (STVT−3). The pressure fluctuations of the STVT profiles also decreased to different degrees. The average pressure fluctuations at the monitoring points decreased by 20.6% (STVT−1), 21.7% (STVT−2), and 23.3% (STVT−3). The performances of the bionic retrofit pumps increased by 1.5% (STVT−1), 2% (STVT−2), and 2.45% (STVT−3) under the design flow rate. This study guides the structural optimization of pumps.

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Section: Introductionmentioning

confidence: 99%

Analysis of the Energy Loss and Performance Characteristics in a Centrifugal Pump Based on Sinusoidal Tubercle Volute Tongue

Lin

Wang

Song

et al. 2023

Entropy

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“…Scholars worldwide have carried out in-depth research on the wheel shape, blade leading edge, trailing edge ellipse parameters, and tip clearance for high-performance centrifugal compressors for a long time. (1)(2)(3)(4)(5)(6) Following aerodynamic optimization design, structural reliability and sensing technology are generally analyzed by the finite element method. (7,8) Meanwhile, with the increasing demand for energy-saving technology globally, optimizing material reliability and improving performance are a focus of research institutes and enterprises.…”

Section: Introductionmentioning

confidence: 99%

New Design of Compressor Blade with Moderate Material Properties for Performance Optimization

Yang¹,

Yu²,

Liao³

et al. 2021

Sensors and Materials

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When optimizing the performance of a high-speed centrifugal compressor, the mechanical properties of the blade material must be suitable for the sensor mounted on the compressor. We designed a new blade with a leading edge having a multistep concave-convex profile, inspired by research on bionics and BladeGen software (an interactive turbomachinery design tool). We compared its performance with that of an original blade having a straight-line leading edge. For the new blade, TurboGrid refinement technology is used to ensure the meshing of the profile's structure. Computation results show that the deformation displacement of the new blade is reduced by 4.26% and that it has better mechanical properties. Moreover, the static pressure ratio and the total pressure ratio of the new wheel are both higher than those of the original wheel over a wide range of mass flow rates. The efficiency of the new wheel decreases slightly by about 1% at an intermediate mass flow rate, but the total-total efficiency and total-static efficiency of the new wheel are increased by 0.35% and 6.36% at a high mass flow rate of 0.1781 kg/s and by 0.02% and 0.84% at a low mass flow rate of 0.0832 kg/s, respectively. Thus, the new blade design improves the mechanical properties of the blade, and the smaller stress is beneficial for compressor performance optimization during the sensing process.

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“…In recent years, the application of bionics had attracted more and more attention of the researchers (Xue et al 2016;Hua et al 2019;Yang et al 2017;Gu et al 2019;Cheng et al 2020;Huang et al 2019). Some sinusoidal tubercles are growing in the pectoral fins of humpback, which allows them to move freely in the ocean.…”

Section: Introductionmentioning

confidence: 99%

Research on the Rotor-Stator Interaction of Centrifugal Pump based on Sinusoidal Tubercle Volute Tongue

Lin

Song

Zhu

et al. 2021

JAFM

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The rotor-stator interaction between the impeller and the volute is the main reason for the pump pressure pulsation and vibration. This work aims at designing a new type of tongue to minimize pressure pulsation, reduce vibration noise and energy loss. Inspired by the humpback pectoral fin, four volute tongues are investigated in this paper, three of which are sinusoidal tubercle volute tongues (STVT) and one is the original volute tongue (OVT). Based on the detached-eddy simulation (DES) turbulence model, the influence of the sinusoidal tubercle volute tongues on the pressure pulsation was investigated, and the flow structure and enstrophy of the four pumps were analyzed, aiming to minimize pressure pulsation, maximize hydraulic performance and reduce the energy dissipation in centrifugal pumps. The results show that the pressure pulsations of the STVT profiles are all lower. The reductions of the average pressure pulsation at the monitoring points are 13.3% (STVT-1), 20.6% (STVT-2), and 16.2% (STVT-3), respectively. The difference in pressure pulsation at the monitoring points closer to the tongue is more obvious. At the design flow rate, the efficiencies of the three bionic pumps are increased by 0.5% (STVT-1), 1.5% (STVT-2), 0.9% (STVT-3), respectively. The STVT profiles change the vortex structure near the tongue and minimized the vortex strength. Meanwhile, the flow in the pump with the STVT profiles have lower enstrophy. The enstrophy of the flow with the STVT-2 profile is the lowest, which is reduced by about 8%. This reduces the dissipation of mechanical energy. The results can be used as a guide for pump design optimization.

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Effects of setting angle and chord length on performance of four blades bionic wind turbine

Cited by 5 publications

References 10 publications

Analysis of the Energy Loss and Performance Characteristics in a Centrifugal Pump Based on Sinusoidal Tubercle Volute Tongue

Analysis of the Energy Loss and Performance Characteristics in a Centrifugal Pump Based on Sinusoidal Tubercle Volute Tongue

New Design of Compressor Blade with Moderate Material Properties for Performance Optimization

Research on the Rotor-Stator Interaction of Centrifugal Pump based on Sinusoidal Tubercle Volute Tongue

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