Heat Transfer Model for Solidification Process of NH₄Cl Solution

Abstract:

In this thesis, a unidirectional solidification model of NH4Cl solution is developed. The dynamics processes of the unidirectional solidification, such as temperature distribution and the location of phase interface are simulated timely. Based on those result data, the heat and mass transfer characteristic is analyzed. And it is found that with the stirring of the liquid zone, the temperature gradient in the liquid zone is decreased from 194 K/m to 24 K/m, and the thickness of the mush zone is enlarged.

• Periodical: Applied Mechanics and Materials (Volumes 80-81)
• Pages: 313-316
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.80-81.313
• Online since: July 2011
• Authors: Yan Jin, Zhi Bing Tian
• Keywords: Heat Transfer, NH₄Cl solution, Solidification

References

[1] J. D. Hunt, Solidification and Casting of Metals, First ed., McGraw-Hill, New York, 1979, pp.3-4.

[2] W. Kurz, D. J. Fisher, Fundamentals of Solidification, First ed., McGraw-Hill, New York, 1984, pp.47-139.

[3] N. Wang, The rheological behaviour of semisolid alloy. Journal of Materials Science. 25(1990) 2185-2187.

[4] M. C. Fleming, Solidification Processing, First ed., McGraw-Hill, NewYork, 1974, pp.65-75.

[5] R. Gaskell, An Introduction to Transport Phenomena in Materials Engineering, First ed., NY. Mac Mii-Jan, New York, 1992, pp.125-130.