Methodological research for defining interface heat transfer coefficient in metal mould casting

In the process of numerical simulation of casting solidification, the interface heat transfer coefficient was traditionally used to reflect the influence of the heat resistance. Among several factors to make the precision more precisely, this coefficient played an important role in affecting the pre...

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Bibliographic Details
Published inCai liao gong cheng = Journal of materials engineering no. 3; pp. 17 - 21
Main Authors Chen, Ling, Yuwen, Xuan-Xuan, Zhong, Shu-Jin, Xie, Jin-Ting
Format Journal Article
LanguageChinese
Published 01.03.2012
Subjects
Coefficients
Computer simulation
Heat transfer coefficients
Mathematical analysis
Mathematical models
Molds
Solidification
Temperature distribution
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Summary:In the process of numerical simulation of casting solidification, the interface heat transfer coefficient was traditionally used to reflect the influence of the heat resistance. Among several factors to make the precision more precisely, this coefficient played an important role in affecting the precision. In order to determined a higher precision, the ANSYS software served as a platform. Basing on the experiment of temperature measurement, the 0.618 method was adopted to select the coefficient, considering the different meet places between the cast and the mould, and the effects made by different interface heat transfer coefficient. By using the least-squares method, a mathematic mode of the realization between time and the interface heat transfer coefficient was set up in order to simulate temperature fields of metal mould casting solidification. And then, a conclusion that a reasonable temperature distribution can be made by comparing the simulation result with the testing data. The result provides a metho
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ISSN:1001-4381