化工学报2016，Vol.67Issue(10)：4160-4168,9.DOI:10.11949/j.issn.0438-1157.20160158
单液滴撞击冷板面的实验和模拟
Experiments and simulation of a single droplet impacting on cold surfaces
摘要
Abstract
The impact spread and solidification of single distilled water droplet of 3.2 mm in diameter at 293 K on a cold plate with temperature below 273 K was studied by both experiment and simulation. The impact heights (100, 250, 500 mm), cold plate temperatures (253, 268 K), and cold plate inclined angles (0°, 30° and 60°) were assessed for effects on the spreading and solidifying process. The impact process of a pullulan solution droplet at a height of 100 mm on a cold plate at 253 K was simulated and compared to that of a distilled water droplet. The results showed that both impact height and horizontal cold plate temperature played an important role in the droplet spreading process whereas inclined angle of cold plate affected freezing deposition of the droplet. Droplet viscosity affected spreading rate and diameter of freezing deposition. Temperature was not a determinant factor for highly viscose materials. A good alignment between simulation and experimental results indicated that temperature change of the droplet in spreading and freezing process would help to directly explain droplet solidification.关键词
蒸馏水单液滴/普鲁兰多糖/冷板面/水平集方法/固化模型Key words
distilled water droplet/pullulan/cold plate/level set method/solidification modeling分类
化学化工引用本文复制引用
徐庆,王瑾,李苗苗,李占勇..单液滴撞击冷板面的实验和模拟[J].化工学报,2016,67(10):4160-4168,9.基金项目
国家自然科学基金项目（31571906,21506163）；天津科技大学自然科学研究基金项目（20130118）。@@@@Foundation item:supported by the National Natural Science Foundation of China (31571906,21506163) and the Natural Science Foundation of Tianjin University of Science and Technology (20130118) （31571906,21506163）
