冰区船首部连续破冰模式下破冰阻力模型试验研究

Experimental Investigation of Ice-breaking Resistance under Continuous Breaking Mode at Bow of Ice-going Ship

在众多冰区航行船舶冰阻力预报的方法中,冰水池模型试验是最为准确和可靠的一种方法。论文依托中国船舶科学研究中心小型冰水池,设计了一条破冰船船首模型,开展了不同航速下的层冰试验和预切割冰试验,研究冰阻力与速度的相关性。通过船首模型总冰阻力和不同部位冰阻力的精细测量,提取冰阻力的不同成分,分析总冰阻力与各分量之间的关系。利用水下摄录像系统,观测冰层破坏过程和破坏模式,分析船首-冰相互作用与破冰阻力的形成机理。研究结果可为冰区船性能预报与船型优化提供参考。

Prediction of ice resistance is a key point of studying ice-going ship’s performance.Based on the small ice basin in China Ship Research Center,an icebreaker bow model was designed,and the layer ice test and pre-sawn ice test at different speed were carried out.Correlation of ice resistance and velocity was studied.Various components of the ice resistance were extracted by fine measurement of the total ice resistance and the ice resistance measured in different parts of the bow model,and the relationship between the total ice resistance and its components was studied.Modes of ice destruction were observed by using underwater videoing documentation,and mechanisms of ship bow-ice interaction and the formation of ice-breaking resistance were analyzed.The research results can provide technical reference for prediction of navigation performance and optimization of hull line for ice-going ships.