Design of hydrofoil for the resistance improvement of planing boat based on CFD technology

Shen, Hai-Long; Xiao, Qing; Zhou, Jin; Su, Yumin; Bi, Xiaosheng

doi:10.1016/j.oceaneng.2022.111413

Cited by 9 publications

(3 citation statements)

References 33 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 years, there has been a significant emphasis on designing planing hulls for maximum speed, with researchers and designers adjusting hull geometry to achieve this goal [1]. These modifications include the addition of features like steps [2], tunnels [3], and hydrofoils [4] to enhance planing hull performance. Among these modifications, the addition of steps has gained attention due to its minimal alteration of the hull's original geometry.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Single and Double Steps in Planing Hulls

Sulman,

Mancini,

Bilandi

2024

JMSE

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Incorporating steps into a hull reduces the wetted surface, promoting improved hydrodynamic lift and reduced resistance at high speeds, provided that the step is designed appropriately. Traditional hydrodynamics studies rely on scaled model testing in towing tanks, but numerical tools offer a more efficient alternative. This study focused on investigating the hydrodynamic performance of stepped hulls by modifying the parent hull of the Naples Systematic Series (C1). The Computational Fluid Dynamics (CFD) code SIEMENS PLM STAR CCM+ version 2302 was used for simulations, including four different beam Froude numbers (FrB = 1.13, 2.22, 2.56, and 2.96) and a total of 15 hull configurations with single and double steps. By employing a three-dimensional computational analysis of multiphase flow using Dynamic Fluid–Body Interaction (DFBI) and overset mesh, various performance parameters such as resistance coefficient, dimensionless wetted surface, sinkage, and dynamic trim were analyzed. The accuracy of the CFD results was confirmed through comparison with experimental data and grid uncertainty assessment. The study demonstrated that placing a single step near the transom decreased trim and increased resistance and wetted surface. Conversely, positioning a step in the forward section reduced the trim angle at lower step heights but increased trim at higher step heights in single-stepped hulls. The application of these findings contributes to the design optimization of stepped hulls for enhanced performance in high-speed maritime applications.

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“…Initially, modifying the hull geometry through an optimization hull form design to achieve an optimum resistance [9]- [11]. Otherwise, the adoption of resistance reduction devices such as hydrofoil [12], hull vane [13]- [15], stern foil [16]- [18], and stern flap [19]- [23] to generate an improved thrust power.…”

Section: Introductionmentioning

confidence: 99%

Seakeeping behavior of hexagonal catamaran hull form as an alternative geometry design of flat-sided hull vessel

Windyandari,

Sugeng,

Sulaiman

et al. 2023

J Appl Eng Science

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The Flat-sided Hull Vessel was introduced to simplify and create an efficient ship production process by eliminating the fairing work, bending, and curved panel line assembly. The built process simplification is expected that the FSHV can be produced by the traditional boat yard. However, the flat hull concept has slightly increased resistance performance. Therefore, implementing a resistance reduction device is endorsed to improve the boat's performance. The focus of the research is to identify the influence of the flat hull concept on seakeeping behavior. The hexagonal catamaran hull form was developed on the deadrise angle, angle of attack, and stern angle variation. Furthermore, the response amplitude operator and the motion spectral density of heave, roll, and pitch motion were calculated. Otherwise, the seakeeping performance of the hexagonal catamaran is compared to the original rounded catamaran. The results show that the hexagonal catamaran hulls have better seakeeping performance in the Beam Sea. However, the conventional catamaran has demonstrated superiority over the hexagonal catamaran in the Bow Quartering and Head Sea conditions.

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Design of hydrofoil for the resistance improvement of planing boat based on CFD technology

Cited by 9 publications

References 33 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

Numerical Investigation of Single and Double Steps in Planing Hulls

Seakeeping behavior of hexagonal catamaran hull form as an alternative geometry design of flat-sided hull vessel

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