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Heat Transfer and Cooling Rate Model of Flow Melt on Vibration Wall

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Abstract

In this paper, a model of heat transfer of melt flow on a vibration wall has been established. Calculation results show that the temperature boundary layer thickness decreases with the increase of vibration frequency and amplitude. As the vibration frequency and amplitude increase, the heat transfer coefficient between alloy melt and slope and between cooling water and slope increase. Cooling rate of melt can reach 400-600 K/s which belong to the sub-rapid solidification regime. The heat transfer mode doesn’t change during the flow process, so vibration not only strengthens the cooling rate of melt, but also stabilizes heat transfer between melt and slope. The grain size of solidification microstructure decreases with increasing vibration intensity, which indicates that vibration increases cooling rate and accelerates nucleation rate. So, the established model agrees with verification experiment, and can relatively well explain the heat transfer and cooling rate of melt flow on vibration plate.

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Acknowledgements

Thank for the supports of National Natural Science Foundation of China under Grant Nos. 51474063 and 51674077, and Fundamental Research Funds for the Central Universities under Grant N150204016.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China

    Xiang Wang

  2. School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an, 710072, China

    Ren-Guo Guan

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  1. Xiang Wang
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  2. Ren-Guo Guan
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Correspondence to Ren-Guo Guan.

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Wang, X., Guan, RG. Heat Transfer and Cooling Rate Model of Flow Melt on Vibration Wall. Trans Indian Inst Met 71, 1635–1641 (2018). https://doi.org/10.1007/s12666-018-1299-7

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  • DOI: https://doi.org/10.1007/s12666-018-1299-7

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