| T型微通道内气泡生成的实验研究 |
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| 引用本文： | 陈彬剑,程林,肖琦.T型微通道内气泡生成的实验研究[J].实验室研究与探索,2011(8). |
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| 作者姓名： | 陈彬剑 程林 肖琦 |
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| 作者单位： | 山东大学热科学与工程研究中心;山东建筑大学山东省建筑节能技术重点实验室;山东省科学院能源研究所; |
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| 基金项目： | 国家重点基础研究发展计划(973)项目(2007CB206900) |
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| 摘 要： | 利用高速摄像仪CCD可视化实验系统研究T型微通道内气泡生成过程,分别以去离子水和氩气作为液相和气相,通过改变两相入口的压力,在不同结构的微通道内对气泡生成机理进行实验研究。结果表明,当气液相的通道直径比大于1时,随着直径比值进一步增大,气泡生成直径和生成周期随着气相压力的增加整体呈增大趋势。但对于气泡大小均匀度,直径比值越小,均匀度越好,且随着直径比值减小,微通道内两相流区域所占区域变窄。这些结论为获得尺寸较小、生成频率稳定、均匀度最佳的微气泡提供必要的实验依据。
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| 关 键 词： | 微通道 微气泡 均匀度 生成周期 流态 |
Generation of Bubbles in T-junction Micro-channels |
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| CHEN Bin-jian,CHENG Lin,XIAO Qi.Generation of Bubbles in T-junction Micro-channels[J].Laboratory Research and Exploration,2011(8). |
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| Authors: | CHEN Bin-jian CHENG Lin XIAO Qi |
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| Institution: | CHEN Bin-jian1,2,CHENG Lin1,XIAO Qi3 (1.Institue of Thermal Science and Technology,Shandong University,Jinan 250061,China,2.Shandong Key Laboratory of Building Energy-saving Technique,Shandong Jianzhu University,Jinan 250101,3.Energy Research Institute,Shandong Academy of Science,Jinan 250014,China) |
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| Abstract: | Bubble generation in the T-junction micro-channels was experimentally investigated by using a high speed CCD camera.Deionized water and Ar are liquid phase and gas phase respectively.Under various inlet pressures the experiment research is made in micro-channels of different geometry.The results show that,when the ratio of the two phase's micro-channel diameters is greater than one,with further increase of the ratio,bubbles' diameters become bigger and generation periods become longer.While for bubbles' uni... |
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| Keywords: | micro-channel micro-bubble uniformity generation period flow pattern |
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