| 零净液流量两相流持液率与阻力特性研究 |
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| 引用本文： | 刘磊,周芳德.零净液流量两相流持液率与阻力特性研究[J].工程热物理学报,2002,23(3):365-368. |
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| 作者姓名： | 刘磊 周芳德 |
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| 作者单位： | 西安交通大学动力工程多相流国家重点实验室,陕西西安710049 |
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| 基金项目： | 国家重点基础研究规划资助项目（No．G1999022308），教育部留学归国人员启动基金资助项目 |
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| 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。
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| 关 键 词： | 气体-液体流动 两相流 复杂流动 压力降 持液率 |
| 文章编号： | 0253-231X(2002)03-0365-04 |
| 修稿时间： | 2001年11月18 |
HOLDUP AND PRESSURE DROP IN TWO-PHASE ZERO NET-LIQUID FLOW |
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| LIU Lei,ZHOU Fang-De.HOLDUP AND PRESSURE DROP IN TWO-PHASE ZERO NET-LIQUID FLOW[J].Journal of Engineering Thermophysics,2002,23(3):365-368. |
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| Authors: | LIU Lei ZHOU Fang-De |
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| 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 experimental data. The results show that two- phase zero net-liquid flow has special flow performances in comparison with the general gas-liquid flow. In two-phase zero net-liquid flow, the liquid holdup is only dependent on mass balance and the frictional pressure drop is negative. |
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| Keywords: | gas-liquid flow two-phase flow complex flow pressure drop holdup |
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