Numerical simulation for steady annular condensation flow in triangular microchannels
Numerical simulation for steady annular condensation flow in triangular microchannels
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DOI：
10.1016/j.icheatmasstransfer.2008.03.001
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发表时间：
2008-08
影响因子：
7
通讯作者：
Yongping Chen;Jiafeng Wu;M. Shi;G. Peterson
中科院分区：
文献类型：
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作者：
Yongping Chen;Jiafeng Wu;M. Shi;G. Peterson
开发了三角形微通道中环形冷凝流的稳定一维模型。冷凝水流沿通道的曲率半径分布已通过数值确定。结果表明，液相的曲率半径在开始时会迅速增加，然后随着冷凝过程沿着微通道的长度进行，半径的增加将进行得更慢。在冷凝流结束时，半径再次迅速增加。较小的接触角和热通量或较大的水力直径和蒸汽压力都会导致较长的冷凝长度。
A steady one-dimensional model for annular condensation flow in triangular microchannels is developed. The curvature radius distribution of the condensate stream along the channel has been determined numerically. The results indicate that the curvature radius of the liquid phase would increase rapidly at the beginning, and then as the condensation process progresses along the length of the microchannels, the radius increase would proceed more slowly. At the end of the condensation flow, the radius increases rapidly again. A smaller contact angle and heat flux or a larger hydraulic diameter and steam pressure will all result in a longer condensation length.