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窄流道内过冷流动沸腾汽化核心密度研究 被引量：3

Active Nucleation Site Density during Subcooled Flow Boiling at Vertical Narrow Rectangular Channel
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摘要 用高速摄像仪对过冷沸腾中的汽泡行为进行了可视化研究,发现在窄空间内,汽化核心密度与热流密度的关系和常规流道的一样,随着热流密度的增加而增加,且汽化核心密度仍与热流密度的平方成正比例关系;窄通道内质量流速对汽化核心密度的大小几乎没有影响,只对沸腾起始点有影响;在同样的热流密度条件下,流道间隙越小,汽化核心密度越大。且随着热流密度的增加,流道间隙对汽化核心密度的影响越大。 At present work, visualized subcooled flow boiling experiments were conducted using a flat stainless steel surface heater. Results indicate that the active nucleation site density of narrow channel is with the same tendency as the regular channels, which is proportioned to the heat flux. Mass flux is with little ef- fect on the active nucleation site density of channel, but with effect on the onset of nucleate boiling. With the same heat flux, the narrower the channel, the highter the active nucleation site density. The effect of channel width on the active nucleation site density increases with the increasing of the heat flux.
作者 潘良明 张俊琦 袁德文 陈德奇 王小军
机构地区 重庆大学动力工程学院 中国核动力研究设计院
出处 《核动力工程》 EI CAS CSCD 北大核心 2008年第6期21-24,34,共5页 Nuclear Power Engineering
基金 国家自然科学基金(50406012) 中国核动力研究设计院空泡物理和自然循环重点实验室2008年基金资助项目(9140C7101020802)
关键词 窄流道 汽化核心密度 过冷流动沸腾 Narrow channel, Active nucleation site density, Subcooled boiling
分类号 TL331 [核科学技术—核技术及应用] TK124 [动力工程及工程热物理—工程热物理]
  • 相关文献

参考文献7

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二级参考文献19

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共引文献25

同被引文献13

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引证文献3

二级引证文献6

核动力工程
2008年 第6期

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