| 汽泡底部微液层的观测 |
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| 引用本文： | 赵有信,蔡祖恢,李美玲,张生. 汽泡底部微液层的观测[J]. 上海理工大学学报(社会科学版), 1993, 0(3) |
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| 作者姓名： | 赵有信 蔡祖恢 李美玲 张生 |
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| 作者单位： | 上海机械学院动力工程学院(赵有信，蔡祖恢，李美玲)，上海机械学院动力工程学院(张生) |
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| 摘 要： | 本文用激光干涉法,在R113低过冷核态流动沸腾下,观测了小汽泡底部微液层,分析与探讨了实验误差及实验方法本身,实验表明:流动沸腾下,汽泡底部总存在楔形微层,外部主流对之无影响:汽泡在核化点处微层中心附近有干斑,一旦汽泡滑离,干斑不再存在.这一结果对进一步分析沸腾换热中微层的作用有重要意义。
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| 关 键 词： | 过冷沸腾 流动沸腾 微液层 等厚干涉 |
EXPERIMENTAL OBSERVATION OF MICROLAYER BENEATH SMALL VAPOR BUBBLE |
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| Zhao Youxin Cai Zuhui Li Meiling Zhang Sheng. EXPERIMENTAL OBSERVATION OF MICROLAYER BENEATH SMALL VAPOR BUBBLE[J]. Journal of University of Shanghai For Science and Technilogy(Social Science), 1993, 0(3) |
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| Authors: | Zhao Youxin Cai Zuhui Li Meiling Zhang Sheng |
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| Affiliation: | Zhao Youxin Cai Zuhui Li Meiling Zhang Sheng |
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| Abstract: | The liquid microlayer under a small bubble for lowly-subcooled nucleate flow boiling of R113 is investigated using laser interferometry. The experimental errors and experimental technique are studied. The experiment results show: 1.Under the condition of lowly-subcooled nucleate flow boiling, there is usually a wedgelike microlayer beneath the bubble and the main flow has no influence on the miccrolayer. 2. At nucleation site, there is usually a dry spot beneath the bubble. 3. Once the bubble migrates, the dry spot disappears. The results are very important for the further analyses of the microlayer's influence on boiling heat transfer. |
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