Investigation on Rudder Hydrodynamics for 470 Class Yacht

Lin, Shijie; Ma, Yong; Zheng, Wandong; Zhang, Song; Lei, Xiaoshan; He, Yangying

doi:10.3390/proceedings2060308

Cited by 2 publications

(2 citation statements)

References 5 publications

(5 reference statements)

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“…Our results may also cross-fertilize fields of application that use lifting bodies that are similar to surfboard fins, e.g., sailboat keel fins [29] and kitefoils [30].…”

mentioning

confidence: 74%

Numerical Investigation of the Hydrodynamics of Changing Fin Positions within a 4-Fin Surfboard Configuration

et al. 2020

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Most sports like surfing are highly developed. It is necessary to tease the last percentages out of the competitors and equipment—in the case of surfing the surfboard-fin-system—to win competitions or championships. In this computational investigation, a parameter study of the positioning of the two rear fins within a 4-fin configuration with fixed front fins on a surfboard is executed to find appropriate fin positions for specific surf situations. Four different inflow velocities are investigated. The RANS and URANS models combined with the SST k − ω turbulence model, which is available within the computational fluid dynamics (CFD) package STAR-CCM+, are used to simulate the flow field around the fins for angles of attack (AoA) between 0° and 45°. The simulation results show that shifting the rear fins toward the longitudinal axis of the surfboard lowers the maximum lift. Surfboards with 4-fin configurations are slower in nearly the whole range of AoA due to a higher drag force but produce a higher lift force compared to the 3-fin configuration. The lift and drag forces increase significantly with increasing inflow velocity. This study shows a significant influence of the rear fin positioning and the inflow velocity on lift and drag performance characteristics.

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“…Our results may also cross-fertilize fields of application that use lifting bodies that are similar to surfboard fins, e.g., sailboat keel fins [29] and kitefoils [30].…”

mentioning

confidence: 74%

Numerical Investigation of the Hydrodynamics of Changing Fin Positions within a 4-Fin Surfboard Configuration

et al. 2020

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“…Huetz et al (2014) [8] optimized the hull shape based on statistical methodology to treat the database. Through the total station, the shape measurement and drawing model of the 470 sailing yacht and laser yacht have been completed, and the numerical simulation of the no wave laser trim hull position, wave navigation, and interaction between the stable plate and hull of the 470 sailing yacht has been carried out [9,10]. The study of the interaction between the hull and the rudder will help to adjust the equipment reasonably, realize the control of the high speed and stability of the sailboat, and ensure the sailboat will complete the race according to the strategic route of the athletes.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Mutual Influence in 470 Sailing Hull and Rudder at Different Hull Speeds

Lin

Zheng

et al. 2020

The 13th Conference of the International Sports Engineering Association

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A 470 sailing race requires effective cooperation between athletes to optimize the hull position and the correct heading. To understand the effect of the hull on the maneuverability of the rudder and the influence of the rudder on the stability and rapidity of the hull at different ship speeds, requires numerical 3D simulation and research on the viscous flow field of 470 sailing based on Reynolds-averaged Navier-Stokes equations. The results show that the rudder can reduce the wave making characteristics of the hull, reducing energy loss and thus improving the hull’s rapidity when the speed is greater than 6 m/s, as the effective area of rudder decrease and increases the stall angle, which reduces the manipulatable performance of the rudder to some extent. This study could quantify the performance of the hull and rudder at different speeds. Moreover, this study might provide strategies for the athletes to effectively control the rudder and hull at different speeds.

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Investigation on Rudder Hydrodynamics for 470 Class Yacht

Cited by 2 publications

References 5 publications

Numerical Investigation of the Hydrodynamics of Changing Fin Positions within a 4-Fin Surfboard Configuration

Numerical Investigation of the Hydrodynamics of Changing Fin Positions within a 4-Fin Surfboard Configuration

Numerical Simulation of Mutual Influence in 470 Sailing Hull and Rudder at Different Hull Speeds

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