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Effect of pressure on heat transfer coefficient at the metal/mold interface of A356 aluminum alloy |
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| Authors: | A Fardi Ilkhchy M Jabbari P Davami |
| Affiliation: | 1. A Young Researchers Club, Ilkhchi Branch, Islamic Azad University, Ilkhchi, Iran;2. Department of Mechanical Engineering, Technical University of Denmark, Nils Koppels Allé, 2800 Kgs. Lyngby, Denmark;3. Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365, Tehran, Iran |
| Abstract: | The aim of this paper is to correlate interfacial heat transfer coefficient (IHTC) to applied external pressure, in which IHTC at the interface between A356 aluminum alloy and metallic mold during the solidification of casting under different pressures were obtained using the inverse heat conduction problem (IHCP) method. The method covers the expedient of comparing theoretical and experimental thermal histories. Temperature profiles obtained from thermocouples were used in a finite difference heat flow program to estimate the transient heat transfer coefficients. The new simple formula was presented for correlation between external pressure and heat transfer coefficient. Acceptable agreement with data in literature shows the accuracy of the proposed formula. |
| Keywords: | Interfacial heat transfer coefficient External pressure Metallic mold IHCP method Finite difference method |
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