【摘要】 采用高速摄像仪拍摄记录熔融金属液柱入水碎化的过程。实验研究了熔融金属温度、入水速度、冷却水温度对熔融金属液柱下落过程的影响。实验结果表明,无量纲碎化长度与经验关系公式吻合得很好;熔融金属温度对金属下落速度没有影响;提高冷却水温度对熔融金属液柱的下降速度有一定的促进作用;大直径金属液柱的平均下降速度明显大于小直径的平均下降速度。更多还原

【Abstract】 In order to investigate the coarse mixing stage mechanism of the vapor explosion,an observ-able experiment equipment facility for low-temperature molten materials to be dropped into water was de-signed in this study.In the experiment,molten material jet was injected into water to experimentally obtain the visualized information.The effects of metal temperature,coolant temperature and jet diameter were in-vestigated.The experimental results show that jet dimensionless length L/ D agrees well with the correla-tion.The jet diameter and coolant temperature have effects on the falling of the jet front while metal tem-perature hasn’t.更多还原