【摘要】 在自建的低温气液两相流实验平台的基础上,通过高速相机获得16 mm内径管路中30°~90°倾角下Taylor气泡之间的合并过程.结果表明,已有的常温气液两相流中Taylor气泡的合并公式普遍高估了跟随气泡和领先气泡的速度比,与实验结果的最大误差为14.6%,对低温气液两相流不再适用.新建的Taylor气泡合并过程速度拟合公式可将最大误差减小至4.7%.此外,气泡间最小稳定距离在60°倾角附近最小,此时气泡间合并趋势最弱.更多还原

【Abstract】 The coalescence process of Taylor bubbles in cryogenic slug flow was obtained by high speed camera in 16 mm inner diameter tube at the inclination angle from 30°to 90°. The results show that the existing equations of Taylor bubble coalescence for normal atmospheric temperature liquid have large discrepancy with the present experimental results. The maximum error is larger than14.6%. Thus the new equations for Taylor bubble coalescence in cryogenic two-phase flow have been established, and the maximum error is reduced to 4.7%. The present study provides reference for installation of cryogenic tube.更多还原