| 垂直低温两相流管底液氮汽泡上升速度的实验研究 |
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| 引用本文： | 张华,王经.垂直低温两相流管底液氮汽泡上升速度的实验研究[J].工程热物理学报,2006,27(Z1):233-236. |
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| 作者姓名： | 张华 王经 |
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| 作者单位： | 上海交通大学机械与动力工程学院,上海,200030 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 本文对垂直低温两相流管底部液氮汽泡的上升速度运用高速摄像机进行了可视化实验研究,对所采集的实时图像进行处理.在Cole和Mendelson汽泡上升速度经验公式的基础上,通过对液氮汽泡的上升速度的分析,提出了圆管管路底部液氮汽泡的上升速度的拟合公式,分析研究其变化规律,为进一步探求圆管内液氮弹状汽泡的生成机理提供依据.
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| 关 键 词： | 高速摄像机 液氮汽泡 上升速度 图像处理 拟合公式 |
| 文章编号： | 0253-231X(2006)Suppl.1-0233-04 |
| 修稿时间： | 2006年3月2日 |
EXPERIMENTAL STUDY ON NITROGEN BUBBLE RISING VELOCITY IN BOTTOM OF CIRCULAR PIPE |
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| ZHANG Hua,WANG Jing.EXPERIMENTAL STUDY ON NITROGEN BUBBLE RISING VELOCITY IN BOTTOM OF CIRCULAR PIPE[J].Journal of Engineering Thermophysics,2006,27(Z1):233-236. |
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| Authors: | ZHANG Hua WANG Jing |
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| Abstract: | Nitrogen bubble rising velocity in bottom of circular pipe has been studied by virtual experiment with high-speed camera.The obtained images are processed systematically.Based on Cole's and Mendelson's empirical formula of bubble rising velocity,fitting formula of nitrogen bubble rising velocity in bottom of circular pipe has been acquired through analyzing nitrogen bubble rising velocity.Through this experiment,we research rising velocity's change law,which is the spade work to study propagation mechanism of nitrogen slug bubble in circular pipe. |
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| Keywords: | high-speed camera nitrogen bubble rising velocity image process fitting formula |
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