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硅基微通道中周期性沸腾的光学可视化
甘云华1; 徐进良2
2007
Source Publication化工学报
ISSN0438-1157
Volume058Issue:007Pages:1641
Abstract以丙酮为工质,在三角形截面的硅基微通道内进行了微尺度沸腾传热实验研究。在对汽液两相流流型进行光学可视化测量的同时,对压力、温度等信号进行了同步动态测量。发现了周期在毫秒级的微时间尺度的周期性沸腾传热。1个完整的周期可以分成3个子过程:进液阶段,汽泡核化、增长、聚合及爆炸阶段,瞬变液膜蒸发阶段。总结出1个完整周期内所存在的4种汽液两相流流型。鉴别出了沸腾起始点。分析了沸腾传热系数随干度的变化关系,结果表明在本实验工况下:当干度小于0.4时,起主导作用的传热机制为核态沸腾;而当干度大于0.4时,起主导作用的传热机制为强制对流沸腾。
Language英语
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/20908
Collection中国科学院广州能源研究所
Affiliation1.华南理工大学
2.中国科学院广州能源研究所
Recommended Citation
GB/T 7714
甘云华,徐进良. 硅基微通道中周期性沸腾的光学可视化[J]. 化工学报,2007,058(007):1641.
APA 甘云华,&徐进良.(2007).硅基微通道中周期性沸腾的光学可视化.化工学报,058(007),1641.
MLA 甘云华,et al."硅基微通道中周期性沸腾的光学可视化".化工学报 058.007(2007):1641.
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