不同过冷度和接触角下静置水滴冻结过程模拟  

Freezing Process Simulation of Standing Water Droplets Under Different Supercooling and Contact Angles

作　　者：白旭[1] 陈冠宇 杨苏杰 杜越 BAI Xu;CHEN Guan-yu;YANG Su-jie;DU Yue(School of Naval Architecture&Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,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

出　　处：《船舶力学》2023年第12期1785-1798,共14页Journal of Ship Mechanics

基　　金：国家自然科学基金项目(51879125);江苏省高校自然科学研究重大项目(18KJA580003);江苏省六大人才高峰高层次人才项目(2018-KTHY-033)。

摘　　要：为了减少船舶因甲板和上层建筑结冰发生事故的频率和危害,对结冰的物理认识和预测能力是非常重要的。通过对结冰过程中结冰阶段的研究,分析不同参数对结冰过程的影响,为船舶结冰预测研究提供理论依据。本文计算了水滴再辉阶段后的冰相比例,讨论了不同阶段的水滴轮廓,并利用FLUENT模拟了水滴在不同过冷度和接触角下的冻结时间。结果表明:过冷度和接触角均对水滴的冻结时间有较大影响;过冷度的减小与冻结时间的增长近似呈指数函数的关系,接触角的增大与冻结时间的增长也趋近于指数函数关系。In order to eliminate danger and to reduce the frequency of ship accidents caused by ice forming on ship decks and superstructures,it is important to have a physical understanding and the ability to predict icing.By studying the freezing stages in an icing process,the influence of different parameters on the icing process is analyzed,which provides a theoretical basis for the prediction of ship icing.In this paper,the proportion of the ice phase after the water droplet recalescence stage is calculated,the water droplet profiles at different stages are discussed,and the freezing time of water droplets at different supercooling degrees and contact angles is simulated by Fluent.The results show that both the supercooling degree and the contact angle have a great influence on the freezing time of water droplets.The decrease of supercooling degree and the increase of freezing time are approximate-ly exponential functions,and the increase of contact angle is also exponential functions for the in-crease of freezing time.

关 键 词：船舶结冰 冰相比例 过冷度 接触角 冻结时间 

分 类 号：U661.1[交通运输工程—船舶及航道工程]