Experimental Study on Ice Forming Process of Cryogenic Liquid Releasing underwater

2017 3rd International Conference on Energy, Environment and Materials Science

能源学;生态环境科学;材料科学

Zhang, Bin^1 ; Wu, Wanqing^1 ; Zhang, Xingdong^1 ; Zhang, Yi^1 ; Zhang, Chuanlin^1 ; Zhang, Haoran^1 ; Wang, Peng^1

Marine Engineering College, Dalian Maritime University, Dalian

116026, China^1

关键词: Environmental conditions;    Experimental system;    Ice forming;    Ice nuclei;    Kelvin- helmholtz instabilities;    Nucleating agents;    Pressure differences;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/94/1/012184/pdf
DOI  :  10.1088/1755-1315/94/1/012184

来源: IOP

【 摘 要 】

Cryogenic liquid releasing into water would be a process combines hyperactive boiling with ice forming. There are still few researches on the experimental study on the environmental conditions for deciding ice forming speed and liquid surviving state. In this paper, to advance our understanding of ice forming deciding factors in the process of LN2releasing underwater, a visualization experimental system is built. The results show that the pressure difference significantly influences the ice forming speed and liquid surviving distance, which is observed by the experiment and theoretically analysed by Kelvin-Helmholtz instability. Adding nucleating agent is helpful to provide ice nucleus which can accelerate the ice forming speed. Water flowing has some effect on changing pressure difference, which can affect the ice forming speed and liquid surviving distance.