In order to precisely describe the dendrite evolution during solidification process, especially in microscale, a continuous method is presented to deal with the discontinuous physical properties beside the solid/liquid interface. In this method, the physical properties are used as averaging physical properties of solid phase and liquid phase in the interface zone, which can smooth the property gap between solid and liquid phases, and make the properties from liquid phase to solid phase. The simulated results show that the method can represent the sidebranches and the solute micro-segregation well.
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