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流动沸腾不稳定性对加热膜上微汽泡的影响 被引量：1

Effect of flow boiling instability on microbubbles adhering to microheaters
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摘要 The microbubble behavior on platinum microheaters immersed in parallel microchannels during flow boiling was experimentally investigated,with the heater driven by pulse-heating.With increasing heat flux of rear face heater,three representative types of microbubbles,corresponding to three instable tendencies were identified.The relations between boiling instability and bubbles behavior were analyzed.The conclusions indicated that transitions among these bubbles and various departure modes strongly depended on the instability of flow boiling in microchannels.Meanwhile,heating power of the rear face heater was also one of the main factors that affected bubbles incipience and diameters.The results of present study can provide powerful basis for the future design of new micro-fluid functional devices. The microbubble behavior on platinum microheaters immersed in parallel microchannels during flow boiling was experimentally investigated, with the heater driven by pulse-heating. With increasing heat flux of rear face heater, three representative types of microbubbles, corresponding to three instable tendencies were identified. The relations between boiling instability and bubbles behavior were analyzed. The conclusions indicated that transitions among these bubbles and various departure modes strongly depended on the instability of flow boiling in microchannels. Meanwhile, heating power of the rear face heater was also one of the main factors that affected bubbles incipience and diameters. The results of present study can provide powerful basis for the future design of new micro-fluid functional devices.
作者 李倩 刘国华 徐进良 张伟
机构地区 中国科学院广州能源研究所微能源系统实验室 中国科学院研究生院
出处 《化工学报》 EI CAS CSCD 北大核心 2009年第5期1156-1161,共6页 CIESC Journal
基金 国家杰出青年科学基金项目(50825603)~~
关键词 微汽泡 铂膜微加热器 脉冲加热 流动沸腾不稳定性 microbubble platinum microheaters pulse heating flow boiling instability
分类号 TK124 [动力工程及工程热物理—工程热物理]
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参考文献14

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二级参考文献19

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化工学报
2009年 第5期

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