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Effect of pressure on heat transfer coefficient at the metal/mold interface of A356 aluminum alloy

Fardi Ilkhchy, A ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.icheatmasstransfer.2012.04.001
  3. Abstract:
  4. 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
  5. Keywords:
  6. External pressure ; Interfacial heat transfer coefficient ; A-356 aluminum alloy ; Effect of pressure ; External pressures ; Finite difference ; IHCP method ; Interfacial heat transfer coefficients ; Inverse heat conduction problem ; Metallic mold ; Temperature profiles ; Thermal history ; Transient heat transfer ; Finite difference method ; Molds ; Thermocouples ; Heat transfer coefficients
  7. Source: International Communications in Heat and Mass Transfer ; Volume 39, Issue 5 , 2012 , Pages 705-712 ; 07351933 (ISSN)
  8. URL: http://www.sciencedirect.com/science/article/pii/S0735193312000711