Prediction method and system for distribution of low-carbon steel casting blank shell and pasty area in crystallizer

The invention belongs to the technical field of metal continuous casting, and particularly relates to a method and a system for predicting distribution of a low-carbon steel casting blank shell and a pasty area in a crystallizer, the actual thickness of a leaked steel blank shell is sampled and analyzed, an acid leaching experiment is not needed, and the actually measured thickness of the leaked steel blank shell, an empirical formula calculation result and a numerical simulation result are combined to obtain a prediction result. The flow characteristics and heat and mass transfer behaviors of the molten steel in the crystallizer in the high-temperature solidification process can be rapidly and accurately obtained, metallurgical transmission phenomena of different characteristic positions in the crystallizer can be displayed in an imaging and quantitative mode, and the thickness of a real casting blank shell and the thickness of a paste area can be predicted. Furthermore, the change rule and the development t