Numerical study on energy-extraction performance of a flapping hydrofoil with a trailing-edge flap

Zhou, Daming; Cao, Yang; Sun, Xiaojing

doi:10.1016/j.oceaneng.2021.108756

Cited by 13 publications

(2 citation statements)

References 30 publications

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“…Second-order upwind is used to discretized governing equations on grid nodes. The flapping hydrofoil and its boundary layer move together, and the motion is compiled by a user-defined function according to Equations ( 1)- (3). Utilizing smoothing and remeshing techniques in dynamic mesh in flapping motion, in order to ensure the calculation accuracy, the maximum number of iterations of the moving grid is set to 100-times.…”

Section: Numerical Verificationmentioning

confidence: 99%

“…Inspired by the fact that aquatic animals in nature disturb the water flow by waving their wing-like limbs to obtain lift and thrust [1]. Some people use this feature to harvest energy from the heave force of flapping hydrofoil and improve the efficiency of energy harvesting by changing the parameters of the hydrofoil flapping [2,3]. Others use the thrust of hydrofoil flapping for underwater vehicle research; people have studied the effect of the vertical reciprocating motion of hydrofoils through numerical and experimental methods, mostly focusing on the combination of pitch and heave motions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimal Matching of Flapping Hydrofoil Propulsion Performance Considering Interaction Effects of Motion Parameters

Wang

Chang

Hou

et al. 2022

JMSE

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In order to maximize the propulsion efficiency of flapping hydrofoil, a new method is proposed in this paper. The effects of heave amplitude, pitch amplitude, and the phase difference between heave and surge on propulsion performance were analyzed by numerical calculation, and it was found that three motion parameters had interactive effects on flapping hydrofoil propulsion performance. BP neural network was used to fit the three motion parameters and propulsion performance. Using this function model, the optimal motion parameters can be obtained under certain thrust. In this study, the optimization matching under certain thrust was carried out by using this method, and the propulsion efficiency was improved by 7.73%.

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Section: Numerical Verificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%