摘要
本文基于多相流混合模型,研究了以高温有机流体(癸烷、丙基环已烷)为驱动工质携带液态金属钠的两相流磁流体发电机的性能。通过比较不同工况下两种驱动工质的发电效率,发现以癸烷为驱动工质的发电机的发电效率更高。对癸烷为驱动工质进一步研究发现,在磁场作用下由于两相滑移速度会使液态金属与驱动工质之间发生气液分离;两相滑移速度随着磁场强度和气泡直径的增大而增大,随空泡率的增大而减小;而发电效率与两相滑移速度变化趋势相反,两相滑移速度越大,发电效率越低。
In this paper,the performance investigations on a two-phase magnetohydrodynamic generator(MHDG)with high-temperature organic fluid and liquid sodium were analyzed numerically based on the mixture model.The simulation results indicated that the generator efficiency with decane is higher.At the same time,we found that two-phase flow would generate gas-liquid separation due to the slip velocity under the magnetic field.Specially,the slip velocity increases with magnetic field strength and bubble diameter,while it decreases with the increase of void-fraction.The generator efficiency is contrary to the trend of slip velocity,which means that the increase of slip velocity will reduce the generator efficiency.
作者
方日亮
黄护林
李来
鹿鹏
何晓强
FANG Ri-Liang;HUANG Hu-Lin;LI Lai;LU Peng;HE Xiao-Qiang(College of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 21016,China;Key Laboratory of nuclear reactor system design,China Nuclear Power Research and Design Institute,Chengdu 610213,China)
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2020年第12期3046-3052,共7页
Journal of Engineering Thermophysics
基金
国家重点研发计划(No.2019YFB1901302)
装备预先研究项目(No.JZX5Y20190221000301)
国家自然科学基金资助项目(No.51876090)
核反应堆系统设计技术重点实验室运行基金。
关键词
磁流体发电机
高温有机工质
滑移速度
气液分离
发电效率
MHD generator
high-temperature organic fluid
slip velocity
gas-liquid separation
generator efficiency
