In this article, a numerical investigation of vapor condensation in a two-dimensional ordered microchannel was conducted\nwith computational fluid dynamics software Fluent. A simplified physical model was built up to simulate a rectangular\nchannel filled with particles. A constant wall heat flux was added to the side walls of the rectangular channel.\nVolume of fluid model was adopted to pursue the interface of the gas and liquid. The results showed that a better heat\ntransfer performance could be obtained with the porous structure. The local heat transfer coefficient obtained from\nsimulation was in good accordance with the former experimental data, which increased with the increase in fluid velocity\nand decreased along the flow direction. Parametric analyses were conducted concerning the effects of initial vapor velocity\nu0, initial temperature T0, and wall heat flux qw on local heat transfer coefficient. The velocity u0 played a significant\nrole during the process of condensation. Temperature distributions along the porous channel and side walls were also\nanalyzed. The results showed that the temperature decreased along the flow direction and increased with the increase\nin fluid velocity.
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