Based on the volume of fluid(VOF)model,numerical models of 2D horizontal tubes with the drop-shaped type are set up,and the influence of the inlet liquid temperature,the liquid flow rate,the tube spacing on the flow and heat transfer characteristics of falling film on the horizontal tubes are studied.The results show that the heat transfer coefficients increase with the increase of liquid flow rate and the tube spacing for the falling film flow outside the drop-shaped tube.As the inlet liquid temperature increases,the film thickness decreases while the heat transfer coefficient increases.
关键词
滴形管/降膜流动/传热/VOF模型
Key words
drop-shaped tube/falling film flow/heat transfer/VOF model
维普
万方数据