摘要
针对气液射流反应过程的流动特性,在欧拉两相流模型、组分输运模型、涡耗散化学反应模型以及Lee相变模型的基础上,对气态六氟化硫与高温液态金属锂的气液射流反应过程进行了三维数值模拟研究,分析了射流反应气羽宏观参数及其变化规律,研究了入口压力对流场温度分布的影响及其与气羽的对应关系。研究结果表明:所采用的数值模拟方法可以较好地预测气液射流反应过程;射流反应气羽主要由六氟化硫核心区和锂蒸气气羽区组成,宏观结构参数主要由锂蒸气气羽决定;六氟化硫核心区与锂蒸气气羽穿透长度均随入口压力的增加而增加;温度峰值位置和总反应速率峰值位置与射流反应气羽尾部相对应。研究结果可为气液射流反应器的优化设计和安全运行提供指导。
For the purpose of investigating the flow characteristics of the gas-liquid reactive jet,an integrated mathematical model,including Euler two-phase model,species transport model,eddy-dissipation reaction model and Lee phase change model,was built up for 3 D numerical simulation on the gas-liquid reactive jet of gaseous sulfur hexafluoride(SF6)injected into liquid metal lithium,wherein the key parameters of the reactive jet plume and their variation were investigated.The effect of inlet pressure on temperature field was analyzed,and the corresponding relationship between jet plume and temperature field was also investigated.The results indicate that the numerical model could better predict gas-liquid reactive jet in present work,the reactive jet plume consists of the core region of sulfur hexafluoride and the region of lithium vapor plume,and the macrostructure of the reactive jet is mainly determined by lithium vapor plume.The core region of sulfur hexafluoride and the lithium vapor plume increase with the inlet pressure.The crest values of temperature distribution and total reaction rate correspond with jet plume tail.The investigation in this work would be helpful for better design and safer operation of the gas-liquid jet reactor.
作者
宗潇
李宏伟
韩新波
彭博
杨赪石
ZONG Xiao;LI Hongwei;HAN Xinbo;PENG Bo;YANG Chengshi(The 705 Research Institute,China Shipbuilding Industry Corporation,Xi’an 710075,China)
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2020年第3期35-40,196,共7页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目（61403306）
中国博士后科学基金资助项目（2018M633600）
中国科协青年人才托举项目（2017QNRC001）
关键词
射流反应
液态金属锂
相变
气羽
数值模拟
jet reactor
liquid metal lithium
phase change
plume
numerical simulation
