【摘要】 为提高单船营运能效,提出一种考虑不规则风浪影响的最小油耗航速定量计算模型.首先进行航段划分,获取海况数据;然后通过增加航行功率修正船舶失速的方法,构建考虑风浪影响的单位时间油耗模型;最后以每航段航速为决策变量,建立最小油耗航速非线性优化模型.考虑到实船应用中最小油耗航速优化算法需具有快速寻找全局最优解的特点,设计初始值算法.以实船某航次运营为例进行了油耗及最小油耗航速计算,结果显示:每海里油耗模型理论值与实测值相对误差在可接受范围内;与不考虑不规则风浪影响的计算模型(平均航速)相比较,采用这种方法计算出的油耗减少了1%,节能效果初见成效.更多还原

【Abstract】 To improve the efficiency of the single ship operation,a quantitative calculation model on minimum fuel consumption speed considering the effect of irregular wind and wave is proposed. First,the route is divided into several sailing legs and the sea state data are acquired. Then,a model of fuel consumption per hour is given using the additional running power to correct the reduction of ship speed due to irregular wind and wave. Finally,a nonlinear optimization model of minimum fuel consumption speed is proposed where the speed on each sailing leg is introduced as a decision variable. In the real ship application,the optimization algorithm of minimum fuel consumption speed is demanded to seek a global optimal solution fast,so a start value algorithm is proposed. An example application of one real voyage is given to calculate the fuel consumption and the minimum fuel consumption speed,which shows that the relative error of fuel consumption per n mile between the predicted value using the proposed method and the recorded value is in the acceptable range. In comparison with the method without considering the effect of irregular wind and wave( using average speed),the fuel consumption calculated by this method reducesby 1%,and the energy saving effect is achieved.更多还原