含盐水滴撞击特性及结冰相变计算  

Calculation of impact characteristics and icing phase transitions of salty droplets

作　　者：唐宇豪 柴得林 易贤 桂业伟[1] TANG Yuhao;CHAI Delin;YI Xian;GUI Yewei(State Key Laboratory of Aerodynamics,Mianyang 621000,China;Key Laboratory of Icing and Anti/De-icing,China Aerodynamics Research and Development Center,Mianyang 621000,China)

机构地区：[1]空天飞行空气动力科学与技术全国重点实验室,四川绵阳621000 [2]中国空气动力研究与发展中心结冰与防除冰重点实验室,四川绵阳621000

出　　处：《西北工业大学学报》2025年第1期31-39,共9页Journal of Northwestern Polytechnical University

基　　金：国家科技重大专项(J2019-Ⅲ-0017)资助。

摘　　要：在寒冷恶劣的海上环境下工作的船舶和海洋平台常遭遇结冰问题,海水飞沫是导致其上层结构结冰的主要原因。将海水飞沫简化为含盐的液态水滴,基于NNW-ICE结冰计算平台,在Lagrange框架下建立了含盐水滴运动过程中的动力学和热力学模型,并结合蒙特卡洛方法和含盐水滴运动相变模型实现了含盐水滴在结构表面上的撞击特性计算。模拟分析了运动相变对不同粒径液滴撞击特性的影响,其中20,30μm粒径液滴由于在运动过程中的质量损失较大,其撞击质量通量显著降低。结合ICEMOD、MARICE、SHIPICE中的海水飞沫结冰相变模型及2种冻结温度模型,基于NNW-ICE开发了二维的含盐水滴结冰相变计算程序;就典型算例进行了对比分析,计算结果相差均在10%以内,验证了该计算程序具备较高的准确性,为含盐水滴结冰数值计算的进一步发展提供了有力支撑。When ships and offshore platforms work in extremely cold and harsh maritime environments,sea spray is the main reason to cause their superstructure to be frozen.In this paper,sea spray is simplified as salty liquid water droplets.Based on the NNW-ICE icing computing platform,the kinetic and thermodynamic models of salty droplets motion were established under the Lagrange framework.Based on the Monte Carlo method and the phase transition model of salty droplets motion,the impact characteristics of salty droplets on the structural surface were simulated.The effects of the moving phase transition on the impact characteristics of salty droplets with different particle sizes were analyzed in this paper,the results show that the impact mass flux of 20μm and 30μm salty droplets decreased significantly due to the large mass loss during the movement.Combined with the sea spray freezing phase transition model and two freezing temperature models in ICEMOD,MARICE and SHIPICE,we developed a two-dimensional icing phase transition calculation program for salty droplets based on the NNW-ICE platform.The typical examples are compared and analyzed,and the difference between the calculation results is less than 10%,which verifies that the calculation program has high accuracy and provides strong support for the further development of the numerical calculation of the salty droplets icing.

关 键 词：海水飞沫 结冰强度 传热传质 数值模拟 盐度变化 

分 类 号：TB131[理学—物理]