| 多孔介质内两相流汽相输运分析 |
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| 引用本文： | 方晨,彭晓峰,杨震.多孔介质内两相流汽相输运分析[J].工程热物理学报,2004,25(6):1007-1009. |
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| 作者姓名： | 方晨 彭晓峰 杨震 |
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| 作者单位： | 清华大学热能工程系,北京,100084;清华大学热能工程系,北京,100084;清华大学热能工程系,北京,100084 |
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| 基金项目： | 国家自然科学基金重点项目资助(No.50136020) |
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| 摘 要： | 本文结合可视化实验技术对多孔球层内汽液两相流动作深入观察和分析。根据汽泡与多孔球层的相互作用,定义汽泡输运的临界半径并建立汽泡输运的动力学模型。在实验观察和合理假设的基础上,定量讨论了汽相流动由分散态到连续态的转变,确定了临界转变点。
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| 关 键 词： | 多孔球层 多相流动 临界直径 流态 |
| 文章编号： | 0253-231X(2004)06-1007-03 |
| 修稿时间： | 2004年1月5日 |
VAPOR PHASE TRANSPORT OF LIQUID-VAPOR FLOW IN POROUS MEDIA |
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| FANG Chen PENG Xiao-Feng YANG Zhen.VAPOR PHASE TRANSPORT OF LIQUID-VAPOR FLOW IN POROUS MEDIA[J].Journal of Engineering Thermophysics,2004,25(6):1007-1009. |
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| Authors: | FANG Chen PENG Xiao-Feng YANG Zhen |
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| Abstract: | Influenced by complexity of geometrical configuration, liquid-vapor two-phase flow in porous media appears many strange features. Employing visual observation technology, this paper conducts an experimental investigation to observe liquid-vapor two-phase flow, particularly vapor phase transport in bead-packed structures. The critical bubble diameter is defined to classify the bubbles in the two-phase flow according to their interactions with geometrical configuration. A dynamic model of bubble motion is proposed. The transition of from non-continuous to continuous vapor flow and the corresponding criterion of transition are also determined based on the reasonable presumption and experimental information. |
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| Keywords: | bead-packed structure multiphase flow critical diameter flow mode |
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