航线优化对于风翼助航船舶节能的影响研究
发布时间：2019-02-16 01:32
【摘要】：本文针对全球节能减排的重大需求以及远洋运输船队降低燃料消耗、控制运营成本的迫切需要,研究了风翼助航船舶航线优化的问题,为其有效利用海洋风力资源提供了理论基础和技术支撑。本文首先利用欧洲天气预报中心发布的近20年的月平均海洋风场数据,对海洋风场的风速风向分布特征进行了分析。结果表明,目标航线的风场在夏季风和冬季风影响的较长时间保持稳定,有较大的利用空间。基于此提出了风翼助航船舶通过优化船舶航线,在全局最优的前提下允许适度"绕航",以充分发挥海洋风场的助推效能,达到节能减排、提高营运效率的新思想。其次,通过对风翼助航船舶的运动分析,建立了目标船舶的MMG分离型运动模型,根据目标风翼风洞试验的结果,对目标风翼进行了仿真实验,通过变换相对风向角和风翼操帆角确立不同风向角下的最佳攻角,获得了最大助推力系数与相对风向角的关系,并利用目标船的试航数据,对比无风场条件下的模拟航行数据,验证了模型的准确性,为航线优化计算提供基础。在船期确定的情况下,风翼助航船舶可以降低主机输出功率,借助风场辅助推力保持定航速航行,从而达到节能效果。以此为优化目标,本文构建了定航速航行条件下的计算风翼助航船舶主机输出的模型以及航线优化模型评价准则,进而建立"最节能"航线优化模型。针对航线优化模型的特点和计算规模,本文基于动态规划算法对模型进行求解,并以30万吨级的VLCC为目标船,对模型进行了仿真。结果表明:优化的航线比大圆航线主机功率输出减少4.41%,而航时只增加4.17小时,航程增加4.46%.本文研究成果可用于风翼助航VLCC船舶,能够有效解决其航线优化问题,指导现代船舶合理利用海洋风场作为辅助能源,从而对船舶的节能优化问题提供一定的指导意义
[Abstract]:In view of the great demand of global energy saving and emission reduction and the urgent need for ocean shipping fleet to reduce fuel consumption and control operating cost, this paper studies the optimization of airfoil navigation ship route. It provides a theoretical basis and technical support for the effective use of ocean wind resources. In this paper, the distribution characteristics of wind speed and direction of ocean wind field are analyzed by using the monthly mean ocean wind field data published by the European Centre for Weather Forecast in the past 20 years. The results show that the wind field of the target route is stable for a long time under the influence of the summer monsoon and the winter monsoon. Based on this, this paper puts forward a new idea of optimizing ship route, allowing moderate "deviation" under the premise of overall optimization, so as to give full play to the boost efficiency of ocean wind field, achieve energy saving and emission reduction, and improve operational efficiency. Secondly, by analyzing the motion of the airfoil navigation ship, the MMG separation model of the target ship is established. According to the results of the wind tunnel test, the simulation experiment of the target wing is carried out. By changing the relative wind direction angle and the wing operating sail angle, the optimum attack angle under different wind direction angle is established, and the relation between the maximum boost force coefficient and the relative wind direction angle is obtained, and the simulated navigation data under the condition of no wind field are compared with the target ship trial data. The veracity of the model is verified and the basis for route optimization calculation is provided. Under the condition that the ship's time is fixed, the wind wing ship can reduce the output power of the main engine and keep the constant speed navigation with the help of the wind field auxiliary thrust, so as to achieve the energy saving effect. With this as the optimization goal, this paper constructs the model of the main engine output and the evaluation criterion of the route optimization model for calculating the ship's main engine output under the condition of constant speed navigation, and then establishes the "most energy saving" route optimization model. According to the characteristics and calculation scale of route optimization model, this paper solves the model based on dynamic programming algorithm, and simulates the model with 300,000-ton VLCC as the target ship. The results show that the power output of the optimized route is 4.41 less than that of the large circle route, but only 4.17 hours longer and 4.46 hours longer. The research results in this paper can be applied to the navigation of VLCC ships with wind wing, which can effectively solve the problem of route optimization and guide modern ships to use the ocean wind field as auxiliary energy reasonably, thus providing certain guiding significance for the optimization of ship's energy saving.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U676.3;U692.31
本文编号：2423906
[Abstract]:In view of the great demand of global energy saving and emission reduction and the urgent need for ocean shipping fleet to reduce fuel consumption and control operating cost, this paper studies the optimization of airfoil navigation ship route. It provides a theoretical basis and technical support for the effective use of ocean wind resources. In this paper, the distribution characteristics of wind speed and direction of ocean wind field are analyzed by using the monthly mean ocean wind field data published by the European Centre for Weather Forecast in the past 20 years. The results show that the wind field of the target route is stable for a long time under the influence of the summer monsoon and the winter monsoon. Based on this, this paper puts forward a new idea of optimizing ship route, allowing moderate "deviation" under the premise of overall optimization, so as to give full play to the boost efficiency of ocean wind field, achieve energy saving and emission reduction, and improve operational efficiency. Secondly, by analyzing the motion of the airfoil navigation ship, the MMG separation model of the target ship is established. According to the results of the wind tunnel test, the simulation experiment of the target wing is carried out. By changing the relative wind direction angle and the wing operating sail angle, the optimum attack angle under different wind direction angle is established, and the relation between the maximum boost force coefficient and the relative wind direction angle is obtained, and the simulated navigation data under the condition of no wind field are compared with the target ship trial data. The veracity of the model is verified and the basis for route optimization calculation is provided. Under the condition that the ship's time is fixed, the wind wing ship can reduce the output power of the main engine and keep the constant speed navigation with the help of the wind field auxiliary thrust, so as to achieve the energy saving effect. With this as the optimization goal, this paper constructs the model of the main engine output and the evaluation criterion of the route optimization model for calculating the ship's main engine output under the condition of constant speed navigation, and then establishes the "most energy saving" route optimization model. According to the characteristics and calculation scale of route optimization model, this paper solves the model based on dynamic programming algorithm, and simulates the model with 300,000-ton VLCC as the target ship. The results show that the power output of the optimized route is 4.41 less than that of the large circle route, but only 4.17 hours longer and 4.46 hours longer. The research results in this paper can be applied to the navigation of VLCC ships with wind wing, which can effectively solve the problem of route optimization and guide modern ships to use the ocean wind field as auxiliary energy reasonably, thus providing certain guiding significance for the optimization of ship's energy saving.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U676.3;U692.31
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1 傅超;航线优化对于风翼助航船舶节能的影响研究[D];大连海事大学;2017年
，本文编号：2423906
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