Abstract
The melting kinetics of a pivalic acid (PVA) dendritic mushy zone was observed for the first time under convection-free conditions. Video data show that PVA dendrites melt into fragments that shrink at accelerating rates to extinction. Individual fragments follow a characteristic time-dependence derived here for the diminishing length scales within a melting mushy zone. The melting kinetics against which the experimental observations are compared is based on the conduction-limited quasi-static process of melting under shape-preserving conditions. Agreement between analytic theory and experiment was found for the melting of a prolate spheroidal crystal fragment with an aspect ratio of C/A = 12.
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Glicksman, M.E., Lupulescu, A., Koss, M.B. (2003). Melting Kinetics of Prolate Spheroidal Crystals. In: Emmerich, H., Nestler, B., Schreckenberg, M. (eds) Interface and Transport Dynamics. Lecture Notes in Computational Science and Engineering, vol 32. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-07969-0_1
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