Research on sail aerodynamics performance and sail-assisted ship stability

Jia-ju, HE; Hu, Yihuai; Tang, Juanjuan; Xue, Shuye

doi:10.1016/j.jweia.2015.08.005

Cited by 25 publications

(15 citation statements)

References 8 publications

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“…18 Featured by much better lift-to-drag ratio than conventional sails, wing sails have been extensively adopted in contemporary sail-assisted vessels. 3,8,16,18 The most representative wing sail can be the series of the NACA airfoil developed by the National Advisory Committee for Aeronautics (NACA). 19 NACA has constructed a considerable database for airfoils.…”

Section: Introductionmentioning

confidence: 99%

“…Generally, the wind tunnel test is often employed to identify the airfoil performance. 3,16 Li et al 3 tested the performance of cascade hard sails under the scale wind tunnel environment and found that the performance of the cascade sails closely linked to the distance between sails. He et al 16 was primarily concerned with the aerodynamic performance of a sail by employing the wind tunnel test, and the stability of sail-assisted vessels from the perspective of stability criteria calculation.…”

Section: Introductionmentioning

confidence: 99%

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New insights into airfoil sail selection for sail-assisted vessel with computational fluid dynamics simulation

Gan

et al. 2018

Advances in Mechanical Engineering

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Wind energy plays a significant role in the energy consumption reduction of the sail-assisted vessels. During the navigation process, how to select the ideal airfoil sails is crucial for the vessel safety and wind energy conversion efficiency. We resolve the airfoil sails selection problem by utilizing computational fluid dynamics simulation. Within the computational fluid dynamics simulation approach, with shear-stress transport k-v turbulence model, we analyze the performance of the three typical airfoil sails including NACA23012, NACA0012, and NACA0018 in the wind field from the perspective of force condition, lift and drag coefficients, and lift-drag ratio under generous wind speeds and angles of attack. And we investigate the pressure contours of the airfoil sails. Then, we can determine the aerodynamic performance of the airfoil sails promptly and identify suitable sails for the sail-assisted vessels under the given wind field.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New insights into airfoil sail selection for sail-assisted vessel with computational fluid dynamics simulation

Gan

et al. 2018

Advances in Mechanical Engineering

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“…Wind power is one environmentally friendly energy that can be used a substitute for the drying up fossil fuel [4]. Generous researches have investigated the sail-assisted navigation techniques, including the behavior of yacht soft sails [11], fluid-structure interaction issues [12], and unsteady aerodynamic phenomena [13].…”

Section: Mathematical Problems In Engineeringmentioning

confidence: 99%

“…By using the wind energy, numerous studies paid attention to the vessels equipped with the sail. Generally, the present studies mainly emphasize on the aerodynamic performance [4,5] and navigation strategy [6][7][8] for the sailboat and the sail-assisted vessels. Little attention has stressed the sail-assisted control system for the vessels.…”

Section: Introductionmentioning

confidence: 99%

Design of Sail-Assisted Unmanned Surface Vehicle Intelligent Control System

Zhao

Diao

et al. 2016

Mathematical Problems in Engineering

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To achieve the wind sail-assisted function of the unmanned surface vehicle (USV), this work focuses on the design problems of the sail-assisted USV intelligent control systems (SUICS) and illustrates the implementation process of the SUICS. The SUICS consists of the communication system, the sensor system, the PC platform, and the lower machine platform. To make full use of the wind energy, in the SUICS, we propose the sail angle of attack automatic adjustment (Sail_4A) algorithm and present the realization flow for each subsystem of the SUICS. By using the test boat, the design and implementation of the SUICS are fulfilled systematically. Experiments verify the performance and effectiveness of our SUICS. The SUICS enhances the intelligent utility of sustainable wind energy for the sail-assisted USV significantly and plays a vital role in shipping energy-saving emission reduction requirements issued by International Maritime Organization (IMO).

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“…By literatures [2,3,4,5,6], researches of sail for motor ships in recent years mainly focus on sail model selection and the interaction between sail and ship, including design, optimization of model and aerodynamic analysis of sails of different structures and materials, routing plan and economic performance forecast, computation analysis of sail structure strength and its influences on ship stability, and interaction between sail and ship and between sails. The core of all these researches is to develop an accurate recognition of sail's aerodynamic performance.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Aerodynamics of Sail in Natural Wind

Zeng

Zhang

2018

Polish Maritime Research

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In order to evaluate the impacts of a motor vessel after installing wind sails, the aerodynamics of the sail should be accurately calculated. However most of the research on sails are based on stable wind instead of natural wind which is changing horizontally and vertically. In this paper wind tunnel tests are carried out based on stable wind field and simulated natural wind field, the results shown that there are 16–44% decrease in natural wind in terms of lifting coefficient and 11–42% decrease for drag coefficient. This would provide a valuable reference to the effectiveness evaluation of the impact of sails for sail assisted ships.

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Research on sail aerodynamics performance and sail-assisted ship stability

Cited by 25 publications

References 8 publications

New insights into airfoil sail selection for sail-assisted vessel with computational fluid dynamics simulation

New insights into airfoil sail selection for sail-assisted vessel with computational fluid dynamics simulation

Design of Sail-Assisted Unmanned Surface Vehicle Intelligent Control System

Experimental Study of the Aerodynamics of Sail in Natural Wind

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