Condensation Heat Transfer in Horizontal Non-Circular Microchannels

作     者：Hicham El Mghari Mohamed Asbik Hasna Louahlia-Gualous 

作者机构：LP2MSURAC08Universite Moulay IsmailFaculte des SciencesMeknesMaroc LUSACUniversite de Caen Basse NormandieSaint LoFrance 

出 版 物：《Energy and Power Engineering》 (能源与动力工程（英文）)

年 卷 期：2013年第5卷第9期

页      面：577-586页

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

主　　题：Condensation Microchannel Numerical Simulation Capillary Regime Heat Transfer 

摘      要：This investigation contributes to a better understanding of condensation heat transfer in horizontal non-circular microchannels. For this purpose, the conservation equations of mass, momentum and energy have been numerically solved in both phases (liquid and vapor), and all the more, so the film thickness analytical expression has been established. Numerical results relative to variations of the meniscus curvature radius, the condensate film thickness, the condensation length and heat transfer coefficients, are analyzed in terms of the influencing physical and geometrical quantities. The effect of the microchannel shapes on the average Nusselt number is highlighted by studying condensation of steam insquare, rectangular and equilateral triangular microchannels with the same hydraulic diameter of 250 μm.