Abstract
For successful modeling of the solidification process, a reliable heat flux boundary condition is required. Many research works has contributed to understand the mechanism of heat transfer and to quantify the heat flux at the metal-mold interface. However, for ease of calculation, the metal-mold heat transfer is often assumed to be uniform and no spatial variation in the air gap formation among these researches. In this paper, a two-dimensional inverse conduction model is introduced. The proposed model can be used to calculate the heat flux with spatial variation. The accuracy and stability of the model has been investigated by a typical profile of heat flux simulating practical conditions of casting solidification. Meanwhile, the effects of various calculation parameters in the inverse algorithm have been also analyzed. The analyzed results show that the proposed inverse model is a feasible and effective tool for determination of the metal-mold interface heat flux.
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