大型极地运输船主机功率评估方法研究

Research on evaluation methods of main engine power for large polar carrier

文章根据推力和阻力平衡原理,结合冰阻力模型试验结果,初步探索了大型极地运输船主机功率的评估方法。文中以一艘极地航行运输船为例,结合冰水池试验结果和满足RMRS规范要求的主机功率评估结果,对上述评估方法进行了验证。当采用理论方法评估主机功率时,设计者必须具有一定的经验,才能正确考虑冰桨相互作用以及螺旋桨的抽吸作用;当采用传统拖曳水池进行低速拖曳模型试验评估主机功率时,虽然推力减额的测量结果没有包含冰桨相互作用的影响,但一定程度上也可满足评估要求。评估结果表明:文中初步探索的理论和模型试验评估方法,能够满足该类极地运输船舶主机功率的评估,可为设计者提供参考。

In this paper,evaluation methods are explored for polar carrier according to balance principle of resistance and thrust.The methods above are verified for a polar carrier in conjunction with test results of ice resistance and rules requirement of classification society.It is noted that the interaction between ice and propeller must be considered in the process of power estimation,and it mainly depends on experience of the designer when the theory method is adopted by designer.Although,the interaction between propeller and ice is not included measurement results of thrust deduction,the model test of low speed can also fulfill the requirement of estimation for the main engine power in conventional towing tank.The evaluation results indicate that it is very effective to assess the main engine power by estimation methods of the theory and the model test,and it can supply reference for the designer.