航線優(yōu)化對于風翼助航船舶節(jié)能的影響研究
發(fā)布時間：2019-02-16 01:32
【摘要】：本文針對全球節(jié)能減排的重大需求以及遠洋運輸船隊降低燃料消耗、控制運營成本的迫切需要,研究了風翼助航船舶航線優(yōu)化的問題,為其有效利用海洋風力資源提供了理論基礎(chǔ)和技術(shù)支撐。本文首先利用歐洲天氣預報中心發(fā)布的近20年的月平均海洋風場數(shù)據(jù),對海洋風場的風速風向分布特征進行了分析。結(jié)果表明,目標航線的風場在夏季風和冬季風影響的較長時間保持穩(wěn)定,有較大的利用空間�；诖颂岢隽孙L翼助航船舶通過優(yōu)化船舶航線,在全局最優(yōu)的前提下允許適度"繞航",以充分發(fā)揮海洋風場的助推效能,達到節(jié)能減排、提高營運效率的新思想。其次,通過對風翼助航船舶的運動分析,建立了目標船舶的MMG分離型運動模型,根據(jù)目標風翼風洞試驗的結(jié)果,對目標風翼進行了仿真實驗,通過變換相對風向角和風翼操帆角確立不同風向角下的最佳攻角,獲得了最大助推力系數(shù)與相對風向角的關(guān)系,并利用目標船的試航數(shù)據(jù),對比無風場條件下的模擬航行數(shù)據(jù),驗證了模型的準確性,為航線優(yōu)化計算提供基礎(chǔ)。在船期確定的情況下,風翼助航船舶可以降低主機輸出功率,借助風場輔助推力保持定航速航行,從而達到節(jié)能效果。以此為優(yōu)化目標,本文構(gòu)建了定航速航行條件下的計算風翼助航船舶主機輸出的模型以及航線優(yōu)化模型評價準則,進而建立"最節(jié)能"航線優(yōu)化模型。針對航線優(yōu)化模型的特點和計算規(guī)模,本文基于動態(tài)規(guī)劃算法對模型進行求解,并以30萬噸級的VLCC為目標船,對模型進行了仿真。結(jié)果表明:優(yōu)化的航線比大圓航線主機功率輸出減少4.41%,而航時只增加4.17小時,航程增加4.46%.本文研究成果可用于風翼助航VLCC船舶,能夠有效解決其航線優(yōu)化問題,指導現(xiàn)代船舶合理利用海洋風場作為輔助能源,從而對船舶的節(jié)能優(yōu)化問題提供一定的指導意義
[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.
【學位授予單位】：大連海事大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：U676.3;U692.31
本文編號：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.
【學位授予單位】：大連海事大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：U676.3;U692.31
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1 傅超;航線優(yōu)化對于風翼助航船舶節(jié)能的影響研究[D];大連海事大學;2017年
，本文編號：2423906
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