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   2019级硕士生王友撰写的有关方腔中水结冰形成冰峰的机理文章在国际知名期刊Journal of Enhanced Heat Transfer 发表。

论文题目： STUDY OF ICE SPIKE FORMATION MECHANISM IN THE WATER-BASED PHASE CHANGE ENERGY STORAGE

作者：You Wang, Ziliang Zhu, Hanbing Ke, Mei Lin, Qiuwang Wang, & Yining Wu

摘要:

      Compared with paraffin,water-based phasechangeenergystorage (WPCES)iswidelyused inspacecraft thermal control systems due to the higher latent heat. However, the volume expansion of water can lead to an ice spike that might damage the enclosure of WPCES—this is of great significance to research on the formation mechanism of ice spike. In this paper, the gas-liquid-solid numerical model with detailed thermophysical properties is applied to investigate the solidification of water in cavities. An experiment is devoted to verify the numerical model. The formation mechanism of ice spike is studied by considering the gravitational gravity range of 0∼9.81 ms–2 and the aspect ratio of water space range of 0.25∼1. The incremental angle is proposed to describe the moving phase interfaces. It is found that the solidification process can be divided into four stages by the extremum of incremental angle. In the first stage, a raised air-water interface and a concave solidification interface are formed. In the second stage, a thin ice layer extends inward from the periphery of raised air-water interface, and it thickens gradually in the third stage. In the fourth stage, a small ice spike is formed with a spiked angle of 130°. Compared with the benchmark, the smaller gravitational acceleration generates a 38.21% larger incremental angle, 8.48% longer solidification time, and 44.34% higher ice spike. The larger aspect ratio generates a 60.96% larger incremental angle, 4.6% shorter solidification time, and 45.01% higher ice spike. The solidification with zero-G environment results in a higher ice spike, which is dangerous for the enclosure of aerospace application.