【作者】 刘磊； 周芳德；

【Author】 Liu Lei;Zhou Fangde;National Laboratory of Multiphase Flow in Power Engineering,Xian Jiaotong University;

【机构】 西安交通大学动力工程多相流国家重点实验室；

【摘要】 分别以牛顿流体和非牛顿流体为液相,研究了垂直管中零净液流量气液两相流的流动特性。提出了零净液流量气液两相流动模型,应用这一模型计算了零净液流量气液两相流的持液率和压力降,模型计算结果与试验结果相符。研究结果表明,零净液流量气液两相流与常规气液两相流相比具有特殊性,表现为其持液率仅由质量平衡方程控制,其摩擦阻力压力降为负值。更多还原

【Abstract】 Two-phase zero net-liquid flow was investigated in a vertical tube using Newtonian and Non-Newtonian fluids as liquid phases,respectively.A mechanistic model was put forward to describe this special case of gas-liquid two-phase flow with liquid flow rate being zero.Liquid holdup and pressure drop calculated by the model fit well with the experimental data.The results show that two-phase zero net-liquid flow has special flow performances in comparison with the general gas-liquid flow.The Liquid holdup in two-phase zero net-liquid flow is only dependent on mass balance and the frictional pressure drop is negative.更多还原