YANG Yifei, ZHUANG Dawei, HU Haitao, et al. Numerical simulation and experimental validation of water condensing and moving on plain-fin surface under dehumidifying conditions[J]. CIESC Journal, 2014, (z2): 140-147.
YANG Yifei, ZHUANG Dawei, HU Haitao, et al. Numerical simulation and experimental validation of water condensing and moving on plain-fin surface under dehumidifying conditions[J]. CIESC Journal, 2014, (z2): 140-147.DOI: 10.3969/j.issn.0438-1157.2014.z2.021.
In order to predict the performance of tube-finned heat exchangers under dehumidifying condition
the behavior of condensing liquid droplet on vertical plain-fin surfaces should be known. The objective of this article is to develop a model for liquid droplet condensation and motion on vertical plain-fin surfaces. To achieve this goal
the mechanisms of droplet condensation and motion are analyzed firstly. Then the equations for predicting the heat and mass transfer rate during the water condensation are established
and a Volume of Fluid-Continuous Surface Force model with varying contact angles along the contact line is developed to predict droplet movement. The prediction ability was verified by the experimental data
and verification results show that: the simulation results of jh agree with 96% of the experimental data within the deviation of ±15%
and the mean deviation is 6.9%; the simulation results of jm agree with 91% of the experimental data within the deviation of ±20%