Experimental Study and Fractal Analysis of Ice Crystal Structure at Initial Period of Frost Formation

Using a system of image magnification and acquisition,we observed and collected pictures of ice crystal in various shapes under different growth conditions.The original pictures were converted into binary images,and fractal analysis was performed with the box-counting dimension.The results show that the dentritic ice crystal has a fractal structure,and the fractal dimension can be obtained.However ice crystals that are not fully developed do not have a fractal structure.The meaning of fractal dimension is discussed.This study provides a basis for a frost growth model that is close to reality.