碎冰-波浪耦合作用下的船模增阻试验研究

Experimental study on added resistance of ship model under crushed ice-wave coupling action

为研究极地船舶在碎冰-波浪作用下的增阻性能和运动响应规律,采用半精炼颗粒状石蜡模型冰,研究迎浪工况下极地船舶的增阻随航速、冰密集度、波长、波高的变化规律,进一步探究联合作用下船舶的运动响应和阻力的变化规律.试验结果表明:在船-浪相互作用下,船模总阻力会增加,波浪增阻和船舶运动响应随波高和波长的增加而增加,并且在Fr=0.055附近会发生变化.船-冰-波浪三者作用时,波长和波高的变化对波浪阻力成分与浮冰阻力成分产生了相反变化,但整体还是体现出增加的趋势;在相同冰密集度条件下,在Fr=0.055附近区间,船舶的运动响应会达到最大.

To study the added resistance performance and motion response of polar ships under the crushed ice-wave action,the semi-refined granular paraffin model ice was used to study the change law of added resistance of polar ships with speed,ice concentration,wave length and wave height under the wave-facing condition,and further explore the change law of resistance and motion response under combined action condition.Experimental results show that the total resistance under ship-wave interaction will increase,the wave resistance and ship motion response will also increase with the increase of wave height and wave length,and change obviously around Fr=0.055.Under the interaction of ship-ice-wave,the wave length and wave height have opposite effects on the wave resistance component and the ice resistance component,but the overall trend is still increasing.At the same ice concentration,the motion response of the ship will reach the maximum in the range near Fr=0.055.