کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
661380 | 1458153 | 2007 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A model for droplet evaporation near Leidenfrost point A model for droplet evaporation near Leidenfrost point](/preview/png/661380.png)
The droplet evaporation process after impinging on a solid wall near Leidenfrost point is theoretically analyzed. Considering the change of heat transfer effective in the evaporation process, it is divided into recoil stage and spherical stage, and the heat transfer models in these two stages are built, respectively. The effect of initial Weber number, initial droplet diameter, solid surface superheat and wettbility are included in the models. A correlation for predicting evaporation lifetime is obtained based on the theoretical analysis and experimental results. By comparing analysis results with experimental data, it is concluded that the evaporation process can be predicted by present model. The results imply that Leidenfrost point may be not the turning point of heat transfer mechanism. The effect of drop size and Weber number are also analyzed.
Journal: International Journal of Heat and Mass Transfer - Volume 50, Issues 25–26, December 2007, Pages 5328–5333