Capillary Blocking in Forced Convective Condensation in Horizontal Miniature Channels
Capillary Blocking in Forced Convective Condensation in Horizontal Miniature Channels
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DOI：
10.1115/1.1351808
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发表时间：
2001-06
影响因子：
--
通讯作者：
Yuwen Zhang;A. Faghri;M. Shafii
中科院分区：
文献类型：
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作者：
Yuwen Zhang;A. Faghri;M. Shafii
对微小通道内的强迫对流凝结进行了数值研究。采用流体体积法（VOF）模拟了水平微管内和平行板间的冷凝过程中的毛细阻塞现象。研究了蒸汽入口速度、饱和温度、表面张力和管径对有效冷凝长度、膜厚和传热系数的影响。液膜厚度和冷凝长度随水力直径或平板间距的减小而减小。当总质量流量下降时，冷凝长度显著减小。
Forced convective condensation in miniature channels is investigated numerically. Capillary blocking that occurs due to condensation in a horizontal miniature tube and between parallel plates is simulated by using the Volume of Fluid (VOF) method. The effects of vapor inlet velocity, saturation temperature, surface tension, and diameter on effective condensation length, film thickness, and heat transfer coefficient are investigated. The film thickness and the condensation length decrease as the hydraulic diameter or the distance between parallel plates decreases. When the total mass flow rate drops, the condensation length decreases significantly.