极地运输船不同推进方案的性能比较（英文）

Performance Comparison of Different Propulsion Schemes for a Polar Carrier

极地航行的运输船需要评估开敞水域和冰区航行的功率性能,文章对一艘极地运输船不同推进方案实施了开敞水域性能和冰区航行破冰能力的评估,推进方案包括定距桨(FPP)推进、调距桨(CPP)推进和导管桨(DP)推进,上述推进器方案的性能采用升力面方法评估。根据净推力和阻力平衡原理以及文中建立的评估方法,并兼顾开敞水域和冰区航行船后推进器的抽吸效应,预报了该极地运输船实尺度航行的功率性能和破冰能力。基于给定的主机功率,采用插值方法求解了破冰能力和功率性能。评估结果表明,导管桨(DP)拥有最优的破冰能力,然而相比定距桨(FPP)和调距桨(CPP),它拥有最差的开敞水域性能。

Polar ships eventually need the assessment of their performance both in open and ice-infested waters. The authors carried out performance evaluations of a polar carrier in open and ice-infested waters and icebreaking capability in the three cases of its propulsion scheme, i.e. fixed pitch propeller (FPP), controllable pitch propeller (CPP) and duct propeller (DP), and then compared their performances. Lifting surface theory was applied to estimate their optimum propeller parameters such as diameters and pitch ratios, etc. The delivered power in full scale was estimated by the balance of net thrust of propeller and resistance of the ship, where interactions between ice and propeller and suction effect of propeller behind the ship were taken into account. The icebreaking capability and power performance were derived from an interpolation method based on given powers of the main engine. The comparison of the performances indicates that DP scheme has the highest icebreaking capability. On the other hand, it presents the worst performance in open waters among the three propulsion schemes.