EAST液态锂限制器分配盒对锂流动性影响的分析研究
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- 英文论文题名：The analytical research of the effect of EAST liquid lithium limiter distributor box to the flow of lithium
- 论文作者：胡乐星 ; 杨庆喜 ; 宋伟 ; 宋云涛 ; 左桂忠 ; 胡建生
- 英文论文作者：L.X.Hu ; Q.X.Yang ; W.Song ; Y.T.Song ; G.Z.Gui ; J.S.Hu ; University of Science and Technology of China ; Institute of Plasma Physics Chinese Academy of Sciences
- 年：2016
- 作者机构：中国科技大学;中国科学院等离子体物理研究所;
- 论文关键词：EAST ; 液态锂限制器 ; 分配盒 ; MHD效应
- 英文论文关键词：EAST ; Liquid lithium limiter ; Distributor ; MHD effects
- 会议召开时间：2016-10-21
- 会议录名称：安徽省第四届（2016年）“卓凌杯”真空科技青年创新大赛暨学术研讨会论文集
- 语种：中文
- 分类号：TL631.24
- 学会代码：AHZK
- 会议名称：安徽省第四届（2016年）“卓凌杯”真空科技青年创新大赛暨学术研讨会
- 会议地点：中国安徽安庆
- 主办单位：安徽省真空学会
- 学会名称：安徽省真空学会
- 页数：9
- 文件大小：831k
- 原文格式：D
- 会议级别：地方
摘要
为考察溢流孔结构及壁面电导率对液态锂流动的影响,通过数值模拟方法对不同尺寸、形状及壁面电导率的溢流孔中液态锂的流动进行数值模拟计算。计算结果表明:溢流孔的截面宽度越小,其出口的速度分布越均匀,速度峰值也越小,但溢流孔进出口的压力损失会显著增加;对于圆形及椭圆形截面的溢流孔,其出口的速度分布远比矩形溢流孔均匀;且随着壁面电导率增大,MHD压降也随之增大。上述结果对分配盒参数的设计及电磁泵的选型具有重要的指导意义。
Numerical simulation method is applied on different size, shape, and surface conductivity of distributor channels to observe the effects the structure and the surface conductivity of distributor channels on the flow of liquid lithium. The calculated results show according to the smaller width of distributor channels is, the more uniform the speed of export is, and the smaller the peak velocity is. On the contrary, the higher the pressure loss is during the import and export. Comparing to rectangular distributor channels, the velocity distribution of the export of circular and elliptic distributor channels is much more uniform. In addition,the larger the surface conductivity is, the bigger the MHD pressure drop is. The above calculated results have important guiding significance for the parameter designing of distributor and the selection of electromagnetic pump.
Numerical simulation method is applied on different size, shape, and surface conductivity of distributor channels to observe the effects the structure and the surface conductivity of distributor channels on the flow of liquid lithium. The calculated results show according to the smaller width of distributor channels is, the more uniform the speed of export is, and the smaller the peak velocity is. On the contrary, the higher the pressure loss is during the import and export. Comparing to rectangular distributor channels, the velocity distribution of the export of circular and elliptic distributor channels is much more uniform. In addition,the larger the surface conductivity is, the bigger the MHD pressure drop is. The above calculated results have important guiding significance for the parameter designing of distributor and the selection of electromagnetic pump.
引文
[1]Mirnov S.Plasma-wall interactions and plasma behaviour in fusion devices with liquid lithium plasma facing components[J].Journal of Nuclear Materials,2009,390(1):876-885.
[2]Guizhong Z,Jiansheng H,Jiangang L,et al.Primary results of lithium coating for the improvement of plasma performance in EAST[J].Plasma Science and Technology,2010,12(6):646.
[3]Ren J,Hu J S,Zuo G Z,et al.First results of flowing liquid lithium limiter in HT-7[J].Physica Scripta,2014,2014(T159):014033.
[4]Hu J S,Ren J,Sun Z,et al.An overview of lithium experiments on HT-7 and EAST during 2012[J].Fusion Engineering and Design,2014,89(12):2875-2885.
[5]Chen Z,Song Y,Yang Q,et al.Design and Analysis of Fast Response Freezing Valve for EAST Liquid Lithium Limiter Loop[J].Journal of Fusion Energy,2014,33(4):342-347.
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[7]其芬,桦.磁流体力学[M].国防科技大学出版社,2007.
[8]P.K.Kundu,I.M.Cohen,Fluid Mechanics,Academic Press,CA,USA,2002.
[9]Rao J S,Sankar H.Numerical simulation of MHD effects on convective heat transfer characteristics of flow of liquid metal in annular tube[J].Fusion Engineering and Design,2011,86(2):183-191.
[10]魏川子.CFETR液态包层的概念设计和MHD效应分析[D].中国科学技术大学,2015.
[11]Shercliff J A.Steady motion of conducting fluids in pipes under transverse magnetic fields[C]//Mathematical Proceedings of the Cambridge Philosophical Society.Cambridge University Press,1953,49(01):136-144.
[12]Zhang X,Pan C,Xu Z.Numerical analysis of liquid metal MHD flows through circular pipes based on a fully developed modeling[J].Fusion Engineering and Design,2013,88(4):226-232.
[13]Zhang X,Pan C,Xu Z.Effect of contact resistance on liquid metal MHD flows through circular pipes[J].Fusion Engineering and Design,2013,88(9):2228-2234.
[14]Ren J,Zuo G Z,Hu J S,et al.A flowing liquid lithium limiter for the Experimental Advanced Superconducting Tokamak[J].Review of Scientific Instruments,2015,86(2):023504.
[2]Guizhong Z,Jiansheng H,Jiangang L,et al.Primary results of lithium coating for the improvement of plasma performance in EAST[J].Plasma Science and Technology,2010,12(6):646.
[3]Ren J,Hu J S,Zuo G Z,et al.First results of flowing liquid lithium limiter in HT-7[J].Physica Scripta,2014,2014(T159):014033.
[4]Hu J S,Ren J,Sun Z,et al.An overview of lithium experiments on HT-7 and EAST during 2012[J].Fusion Engineering and Design,2014,89(12):2875-2885.
[5]Chen Z,Song Y,Yang Q,et al.Design and Analysis of Fast Response Freezing Valve for EAST Liquid Lithium Limiter Loop[J].Journal of Fusion Energy,2014,33(4):342-347.
[6]Davison H W.Compilation of thermophysical properties of liquid lithium[J].1968.
[7]其芬,桦.磁流体力学[M].国防科技大学出版社,2007.
[8]P.K.Kundu,I.M.Cohen,Fluid Mechanics,Academic Press,CA,USA,2002.
[9]Rao J S,Sankar H.Numerical simulation of MHD effects on convective heat transfer characteristics of flow of liquid metal in annular tube[J].Fusion Engineering and Design,2011,86(2):183-191.
[10]魏川子.CFETR液态包层的概念设计和MHD效应分析[D].中国科学技术大学,2015.
[11]Shercliff J A.Steady motion of conducting fluids in pipes under transverse magnetic fields[C]//Mathematical Proceedings of the Cambridge Philosophical Society.Cambridge University Press,1953,49(01):136-144.
[12]Zhang X,Pan C,Xu Z.Numerical analysis of liquid metal MHD flows through circular pipes based on a fully developed modeling[J].Fusion Engineering and Design,2013,88(4):226-232.
[13]Zhang X,Pan C,Xu Z.Effect of contact resistance on liquid metal MHD flows through circular pipes[J].Fusion Engineering and Design,2013,88(9):2228-2234.
[14]Ren J,Zuo G Z,Hu J S,et al.A flowing liquid lithium limiter for the Experimental Advanced Superconducting Tokamak[J].Review of Scientific Instruments,2015,86(2):023504.