Research on shipping energy-saving technology: Hydrofoil amphibious vehicle driven by waterjet propulsion

Liu, Bolong; Xu, Xiaojun; Pan, Dibo; Wang, Xiaocong

doi:10.1016/j.jclepro.2022.135257

Cited by 16 publications

(2 citation statements)

References 25 publications

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“…Hydrofoil, as the basic shape of the fluid blade, plays an important role in the fluid transport and energy conversion and is mostly used in shipping and navigation vehicles and other fields (Lv et al, 2013;Shen et al, 2022;Liu et al, 2023). When the ship or vehicle moves forward, the fluid passing around the hydrofoil produces resistance, such as friction resistance and pressure differential resistance, which is extremely unstable.…”

Section: Introductionmentioning

confidence: 99%

Drag reduction of Clark-Y hydrofoil by biomimetic fish scale structure under the condition of biomimetic jet

Yan,

Xie,

et al. 2024

Front. Energy Res.

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Hydrofoil, as the basic shape of the fluid blade, is widely used in fluid transport and energy conversion. However, friction resistance and pressure differential resistance are generated in the hydrofoil flow process, resulting in substantial energy consumption and negatively affecting the economy. On this basis, we propose two drag-reducing structures based on Clark-Y hydrofoil. In the design process of the jet structure, we considered the bionic jet velocity, jet angle and jet structure position as the design parameters and obtained the optimal jet structure by using Taguchi method. Finally, the two schemes (Clark-Yori and Clark-Yopt) are numerically simulated using large eddy simulation. Results show that when Ujet = 1.44 m/s, θ = 3° and x = 18.6 mm, the jet structure can play a significant drag reduction effect. Compared with Clark-Yori, the drag coefficient of Clark-Yopt is reduced by 26.5%, and the lift drag ratio is increased by 16.4%. Compared with Clark-Yori, Clark-Yopt can reduce the wall shear stress of the leading edge of the hydrofoil, thereby diminishing the frictional resistance. Meanwhile, the jet structure can effectively balance the area of the low-pressure region on the suction side of the hydrofoil, significantly reducing the pressure differential resistance. Clark-Yopt can accelerate the vortex collapse that decreases turbulence intensity and turbulence resistance. Moreover, it can effectively block the near-wall reflux of hydrofoil and reduce the internal friction between the reflux and the main flow.

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Section: Introductionmentioning

confidence: 99%

Drag reduction of Clark-Y hydrofoil by biomimetic fish scale structure under the condition of biomimetic jet

Yan,

Xie,

et al. 2024

Front. Energy Res.

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“…In recent studies, it has been demonstrated that installing stern flaps and underwater tail hydrofoils on amphibious vehicles can significantly enhance wave compression and resistance reduction [8][9][10][11][12]. Both these additions are instrumental in adjusting the vehicle's attitude and optimizing the flow field around the vehicle's hull [13].…”

Section: Introductionmentioning

confidence: 99%

Study on the Impact of Tail Wing Profiles on the Resistance Characteristics of Amphibious Vehicles

Jiang,

Ding,

2024

JMSE

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The resistance performance of amphibious vehicles can be improved by installing underwater tail hydrofoils. The research on the impact of different hydrofoil profiles on the resistance characteristics of amphibious vehicles can provide a reference for the vehicle’s design. For an amphibious vehicle model, five shapes of symmetrical hydrofoils, NACA0012, NACA0015, NACA0016, and asymmetric hydrofoils NACA23012, NACA66-209, were selected as the underwater tail wing of the vehicle body, respectively. Based on the RANS method and overset grid technology, the resistance performance of the vehicle body was numerically calculated, and the resistance variation in the amphibious vehicle equipped with different tail hydrofoils at 0.43 < Fr∇ < 1.3 speed was obtained. The basic shape of amphibious vehicle tail wings can be determined by comparing the effects of symmetrical hydrofoils and asymmetric hydrofoils on body resistance. The results show that the asymmetric hydrofoils have a better resistance reduction effect on amphibious vehicles than the symmetrical ones. Among them, an amphibious vehicle installing the asymmetric hydrofoil NACA66-209 as an underwater tail wing can reduce resistance by 44.3%. Chord length is an important factor affecting the resistance reduction performance of tail wings. When Fr∇ = 1.3, the asymmetric hydrofoil optimized based on chord length has a 21.2% higher resistance reduction effect on amphibious vehicles.

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Energy efficiency research of propulsion system for series-parallel hybridization of amphibious vehicles

Sun,

Xin,

Gao

2024

Heliyon

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Research on shipping energy-saving technology: Hydrofoil amphibious vehicle driven by waterjet propulsion

Cited by 16 publications

References 25 publications

Drag reduction of Clark-Y hydrofoil by biomimetic fish scale structure under the condition of biomimetic jet

Drag reduction of Clark-Y hydrofoil by biomimetic fish scale structure under the condition of biomimetic jet

Study on the Impact of Tail Wing Profiles on the Resistance Characteristics of Amphibious Vehicles

Energy efficiency research of propulsion system for series-parallel hybridization of amphibious vehicles

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