| 多孔球层内核态沸腾过程特性的实验观察 |
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| 引用本文： | 王峥,彭晓峰,王补宣,刘涛.多孔球层内核态沸腾过程特性的实验观察[J].工程热物理学报,2002,23(6):742-744. |
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| 作者姓名： | 王峥 彭晓峰 王补宣 刘涛 |
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| 作者单位： | 1. 清华大学热能工程系,北京,100084
2. 北京航空航天大学动力系,北京,100080 |
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| 基金项目： | 国家重点基础研究发展规划资助项目（No.G2000026301） |
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| 摘 要： | 本文以水为实验工质,对从底部加热多孔球层内核态沸腾过程进行可视化观察。通过高速图像采集系统;拍摄和观察了孔隙内汽泡的成长过程,在实验观察的基础上,对多孔球层内核态沸腾过程的一些基本特性进行了分析和讨论。
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| 关 键 词： | 多孔球层 核态沸腾 可视化研究 |
| 文章编号： | 0253-231X(2002)06-0742-03 |
| 修稿时间： | 2001年12月21 |
EXPERIMENTAL INVESTIGATION OF NUCLEATE BOILING PHENOMENA IN BEAD-PACKED STRUCTURES |
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| WANG Zheng,PENG Xiao-Feng,WANG Bu-Xuan,LIU Tao.EXPERIMENTAL INVESTIGATION OF NUCLEATE BOILING PHENOMENA IN BEAD-PACKED STRUCTURES[J].Journal of Engineering Thermophysics,2002,23(6):742-744. |
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| Authors: | WANG Zheng PENG Xiao-Feng WANG Bu-Xuan LIU Tao |
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| Institution: | WANG Zheng PENG Xiao-Feng WANG Bu-Xuan1 LIU Tao |
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| Abstract: | A visual study was conducted on the boiling behavior, especially the dry-out and rewet-ting process in three-dimensional porous structures made of staggered glass beads. The bead-packed structure was filled with water, and heated from below. Using a high-speed video imaging system, pore-scale bubble dynamical behavior was observed. It was found that the narrow-gap corner between a glass bead and the heated wall is a dual-effect area, serving as a very active wetting area as along with an active bubble generating one. Replenishment or liquid-supply for wetting effect of the narrow-gap corner zone that plays a very important role on the dry-out and rewetting process is a unique characteristic in bead-packed structures. |
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| Keywords: | bead-packed structures nucleate boiling visualization |
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