Dynamic bubble behavior during boiling in bead-packed structures
Dynamic bubble behavior during boiling in bead-packed structures
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DOI：
10.1016/j.ijheatmasstransfer.2004.05.032
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发表时间：
2004-10
影响因子：
5.2
通讯作者：
Z. Wang;X. Peng;J. Ochterbeck
中科院分区：
文献类型：
--
作者：
Z. Wang;X. Peng;J. Ochterbeck
进行了实验研究，直观地观察了由交错玻璃珠制成的三维多孔结构中的沸腾行为，特别是与气泡界面处发生的热和质量传递相关的动态气泡过程和气泡周围的孔隙尺度液体流动。实验表明，动态气泡行为受到珠粒填充结构的显着影响，并且观察和讨论了由特殊孔隙几何形状引起的几种独特的沸腾现象。使用作用在气泡上的力平衡来描述气泡形状和主气泡界面。进行了理论研究来描述和评估补充液体的行为以及相关的界面传输效应。理论分析得出，气泡界面受到界面热量和质量传输的调节，为补给提供足够的驱动力。这个结论与实验观察是一致的。
An experimental investigation was conducted to visually observe the boiling behavior in a three-dimensional porous structure made of staggered glass beads, especially the dynamic bubble process and pore-scale liquid flow around bubbles associated with the heat and mass transport taking place at the bubble interface. The experiments show that the dynamic bubble behavior was significantly affected by the bead-packed structure, and several unique boiling phenomena caused by special pore geometry were observed and discussed. The bubble shape and primary bubble interface were described using a force balance acting on the bubble. A theoretical study was performed to describe and evaluate the behavior of the replenished liquid and associated interfacial transport effects. It was concluded from the theoretical analysis that the bubble interface is regulated by interfacial heat and mass transport to provide sufficient driving force for the replenishment. This conclusion is in agreement with the experimental observation.