低气温条件下极地船舶舷侧压载舱温度场数值模拟研究  

Numerical simulation of temperature field in side ballast tank of polar ship at low temperature

作　　者：丁仕风 胡扬帆 周利 曹晶 刘仁伟 刘志兵[3] DING Shifeng;HU Yangfan;ZHOU Li;CAO Jing;LIU Renwei;LIU Zhibing(School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China;Shanghai Rules and Research Institute,China Classification Society,Shanghai 200135,China;Marine Design&Research Institute of China,Shanghai 200011,China)

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003 [2]中国船级社上海规范研究所,上海200135 [3]中国船舶及海洋工程设计研究院,上海200011

出　　处：《中国舰船研究》2023年第5期65-72,共8页Chinese Journal of Ship Research

基　　金：国家重点研发计划资助项目(2022YFE010700);国家自然科学基金面上项目资助(52171259);工信部高技术船舶科研项目(工信部重装函[2021]342号)。

摘　　要：[目的]旨在分析极地低气温环境温度及压载水容量对极地船舶压载舱温度场分布的影响。[方法]采用流体体积法(VOF)模型模拟气-液两相,标准k-ε湍流模型模拟流体运动,建立极地船舶压载舱热传递的数值分析模型,分析低气温条件下压载舱温度场的动态变化过程,揭示多环境温度和多装载高度对压载舱温度场的影响机制。[结果]随着热传递的持续发生,舷侧压载舱水线以上区域的温度快速下降,降温区分别沿横向向舱内延伸和沿舱壁向下延伸;当压载水较多时,由于水的热容大,舱室温度场相对稳定,但空气热容低、温度场变化大,易出现气旋并进一步影响计算域的温度场分布;在相同压载水容量条件下,外界环境温度越低,内外温差越大,热交换越剧烈,压载舱温度变化越迅速。[结论]采用VOF两相流模型和标准k-ε湍流模型可以较好地揭示极地低气温环境下压载舱温度场的时空演化特征,分析内、外部热边界条件变化对压载舱温度场变化的影响,可为极地船舶压载舱防寒/防冻结提供必要的技术参考。[Objectives]This paper aims to analyze the influence of polar low temperature environment and ballast water capacity on the dynamic change process of the temperature field in polar ship's ballast tank.[Methods]The volume of fluid(VOF)model was used to simulate the two phases of gas and liquid,and the standard k-εturbulence model was used to simulate the fluid movement.The numerical analysis model of heat transfer in the ballast tank of polar ships was established to analyze the dynamic change process of the temperature field of the ballast tank at low temperature,and reveal the influence mechanism of multiple ambient temperatures and multiple loading heights on the temperature field of the ballast tank.[Results]With the continuous occurrence of heat transfer,the temperature in the area above the waterline of the side ballast tank decreases rapidly,and the cooling area extends laterally to the cabin and downward along the bulkhead respectively.When there is more ballast water,the temperature field in the cabin is relatively stable due to the large heat capacity of water,but the air heat capacity is low and the temperature field changes greatly,which is prone to cyclones and further affects the temperature field distribution in the calculation domain.Under the condition of the same ballast water capacity,the lower the external ambient temperature,the greater the difference between internal and external temperatures,the more intense the heat exchange,and the faster the temperature of the ballast tank changes.[Conclusions]The VOF two-phase flow model and the standard k-εturbulence model can better reveal the temporal and spatial evolution characteristics of the temperature field in the ballast tank in polar low temperature environment,and analyze the influence of internal and external thermal boundary conditions on the change of the temperature field in the ballast tank,which can provide necessary technical reference for the cold/freeze protection of polar ships'ballast tanks.

关 键 词：极地船舶 热传递 数值模拟 流体体积法 温度场 

分 类 号：U663.85[交通运输工程—船舶及航道工程]