摘要
采用黏聚单元法构建冰层有限元数值模型,模拟破冰船在冰层中的连续破冰过程,对破冰船的冰阻力进行了预报;同时,使用多种经验与解析公式,预报了破冰船所受冰阻力.通过将数值模拟和经验与解析公式计算所得的冰阻力与模型试验结果进行对比,验证了数值模拟方法和经验与解析公式预报的适用性和准确性.结果表明,数值模拟所得的冰阻力较为准确,适用于预报破冰船冰阻力;各个经验与解析公式预报精度不尽相同,但都具有能方便快捷给出预报结果的优点.在预报连续破冰过程的冰阻力时,可根据实际需要选择合适的预报方法.
The cohesive element method was applied for modelling finite element numerical model of level ice.Using this model,the continuous icebreaking of an icebreaker in level ice was simulated and the ice resistance was predicted.Meanwhile,various empirical and analytical formulas were applied to predict the ice resistance.By comparing the prediction results with experimental data,the applicability and accuracy of the numerical simulation and various formulas were validated.It is demonstrated that the numerical simulation can give a more accurate prediction and is suitable for ice resistance prediction.While different empirical and analytical formulas show diverse prediction accuracy,they are all convenient and efficient for ice resistance prediction.In the prediction of ice resistance during continuous icebreaking in level ice,an appropriate prediction method can be chosen according to practical application.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2016年第8期1152-1157,共6页
Journal of Shanghai Jiaotong University
关键词
冰层
破冰
冰阻力
数值模拟
level ice
ice breaking
ice resistance
numerical simulation
