低温直立管道中两相自然循环流动过程的数值计算  

Numerical Calculation of Two-phase Natural Circulation in Vertical Pipe of Cryogenic Systems

作　　者：万忠民[1] 苏卡林[1] 王勇[2] 周刚[2] 

机构地区：[1]湖南理工学院物理系,岳阳414006 [2]华中科技大学制冷及低温教研室,武汉430074

出　　处：《低温与超导》2004年第2期31-34,共4页Cryogenics and Superconductivity

摘　　要：由于低温系统中直立管中喷泉现象对系统的危害有两点 :一是水锤冲击 ,二是系统卸压影响。文中建立了低温直立管两相自然循环流动模型 ,并且对喷泉过程进行数值仿真计算 ,给出汽弹的大小和汽弹涌出管段破灭的时间间隔。There are two harms caused by geyser phenomenon in the vertical pipe of cryogenic systems, and one is water hammer impacts another is system unload effects. The model of two-phase natural circulation in vertical pipe of cryogenic systems in this paper and the size and time period of Taylor bubble are listed in the results of numerical calculation. The results of numerical calculation are very important to the security of the cryogenics systems.

关 键 词：两相流 数值计算 低温直立管道 喷泉现象 安全性 

分 类 号：O359[理学—流体力学]