Computation of the Heat Exchange Coefficient in Cylindrical Coordinates Mathematical Modelling of Castings Solidification
Journal Title: RECENT - Year 2012, Vol 13, Issue 36
Abstract
The paper discusses the advantages of utilizing cylindrical coordinates in the mathematical modelling of the solidification of castings with rotational symmetry. In this case the mould - casting assembly is divided into elementary rings. It is shown that for elementary rings undergoing solidification the equivalent thermal conductibility coefficient is influenced by the direction of motion of the solidification front. The paper presents study results concerning this influence. Further study concerned the influence of ring radius and thickness on this coefficient. Eventually a working methodology is established for developing mathematical models considering these aspects.
Authors and Affiliations
IonuĊ£ IONESCU, Daniela IONESCU, Ioan CIOBANU, Vasile JIMAN
Keywords
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