Journal of Northeastern University Natural Science ›› 2017, Vol. 38 ›› Issue (10): 1416-1420.DOI: 10.12068/j.issn.1005-3026.2017.10.010

• Materials & Metallurgy • Previous Articles     Next Articles

Study on Heat Transfer Coefficient and Numerical Simulation of Planar Solidification Casting

SHAO Bo, QIN Ke, ZHANG Hai-tao, CUI Jian-zhong   

  1. Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China.
  • Received:2016-11-14 Revised:2016-11-14 Online:2017-10-15 Published:2017-10-13
  • Contact: ZHANG Hai-tao
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Abstract: 2D mathematical models of spray cooling and planar solidification casting were established. Using the temperature data measuring from 1070 aluminum alloy ingot, the relationships between the cooling surface temperature and heat transfer coefficient (HTC) under different cooling water pressures was derived reversely, which was used to verify the model of planar solidification casting. The results showed that the HTC firstly increases and then decreases with the decrease of the cooling surface temperature, and reaches the peak at about 400K. The HTC peak value and its corresponding temperature increase with the cooling water pressure. The casting experiment results showed that the solidification front is macroscopically planar and the cooling rate of the ingot is uniformly distributed during the solidification. The simulation results well agree with the experimental results, which prove the capability of the model of planar solidification casting.

Key words: heat transfer coefficient, spray cooling, planar solidification, numerical simulation, solidification front

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