Comparison of different methods for predicting the drift angle and rudder resistance by wind propulsion systems on ships

Elger, David E.; Bentin, Marcus; Vahs, M

doi:10.1016/j.oceaneng.2020.108152

Cited by 4 publications

(3 citation statements)

References 3 publications

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“…According to the force analysis in Fig. 8, the boosting force produced by the sail on the boat is [13]:…”

Section: Sailing Aid and Energy Saving Applicationmentioning

confidence: 99%

“…Fig.9shows the rectangular coordinate system O-LDZ[12], with the origin O at the center of the model bottom plate, the Z-axis vertically upright, the L-axis on the horizontal plane in the direction of lift , and the D-axis in the direction of drag. Th e aerodynamic force on the sail is decomposed into a drag force F D along the incoming direction, a lift force F L perpendicular to the incoming direction, and a torque M on the mast, with the reference point of the moment being the origin O.According to the force analysis in Fig.8, the boosting force produced by the sail on the boat is[13]:…”

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confidence: 99%

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Wind Tunnel Experiment of Multi-Mode ARC Sail Device

Zhang

Jia-ju

2021

Polish Maritime Research

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A ship’s wind energy utilization device with multi-mode arc-shaped sails is designed, which have different working modes for sail-assisting or wind power generation according to the ship’s navigation. The structural characteristics and working principles of this device are firstly described in this paper. Three sets of arc-shaped sails with different thickness (4.5 cm, 11.3 cm, 21.7 cm) were designed. Wind tunnel experiments were carried out in the respects of sail-assisting performance and wind-power generation to determine the best sail blade shape and to verify the energy-saving effect of this device. Experiments show that the sail with the smallest thickness (4.5 cm) has a better boosting effect than others, and the sail with the largest thickness (21.7 cm) has the best wind power generation performance. Considering the lateral force and the structural strength of the support, in the case of the comprehensive evaluation for the boosting and power generation performance, it is considered that the intermediate thickness (11.3 cm) is the best choice. The device has a good comprehensive energy utilization effect and has development and application value.

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“…According to the force analysis in Fig. 8, the boosting force produced by the sail on the boat is [13]:…”

Section: Sailing Aid and Energy Saving Applicationmentioning

confidence: 99%

mentioning

confidence: 99%

Wind Tunnel Experiment of Multi-Mode ARC Sail Device

Zhang

Jia-ju

2021

Polish Maritime Research

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“…They studied the aerodynamic interaction among multiple sails and analyzed the sailing performance of the ship, such as rudder angle and heading angle, under wind influence. Elger et al [30] studied the calculation of lateral force caused by the sailing drift angle and rudder angle during sailing. They put forward a calculation method for the lateral force of a sailing boat and verified its effectiveness with the towing model test.…”

Section: Introductionmentioning

confidence: 99%

Evaluation Method for Energy Saving of Sail-Assisted Ship Based on Wind Resource Analysis of Typical Route

Wang

et al. 2023

JMSE

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Sail-assisted technology can reduce greenhouse-gas emissions by saving the energy consumption of ships with wind energy utilization. The distribution characteristics of marine wind resources are critical to the energy-saving effect of sail-assisted ships. However, due to the lack of effective energy-saving evaluation methods for improving the utilization rate of wind energy, a high potential for wind energy utilization still exists. A novel energy-saving evaluation method based on the wind energy resource analysis of typical ship routes is proposed in this paper. First, a three-degree-of-freedom motion model for sail-assisted ships considering the wing sail forces is constructed. Then, a wind resource acquisition and analysis method based on spatial–temporal interpolation is proposed. On this basis, the wind field probability matrix and wing sail force matrix are established. Ultimately, an energy-saving evaluation method for sail-assisted ships on typical routes is proposed by combining the sailing condition of ships. The case study results show that the energy-saving effect of a wing sail-assisted oil tanker that sailed on the China-to-Middle East route was more than 5.37% in 2021 and could reach 9.54% in a single voyage. It is of great significance to realize the popularization and application of sail-assisted technology, thus improving the greenization of the shipping industry.

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Wind propulsion

Thies

Fakiolas²

2022

Sustainable Energy Systems on Ships

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Comparison of different methods for predicting the drift angle and rudder resistance by wind propulsion systems on ships

Cited by 4 publications

References 3 publications

Wind Tunnel Experiment of Multi-Mode ARC Sail Device

Wind Tunnel Experiment of Multi-Mode ARC Sail Device

Evaluation Method for Energy Saving of Sail-Assisted Ship Based on Wind Resource Analysis of Typical Route

Wind propulsion

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