Solidification and downstream meniscus prediction in the planar-flow spin casting process

AB Bichi, Warren Smith, J Wissink

Research output: Contribution to journalArticle

5 Citations (Scopus)


mathematical model describing the fluid flow, heat transfer and solidification in planar-flow spin casting is introduced. Asymptotic solutions are derived, including expressions for key physical quantities such as the solid/liquid and liquid/gas interfaces. The time-dependent fluid flow in the turning and nearly rectilinear regions is investigated numerically. A recirculation region, in which vorticity accumulates over time, is shown to form immediately downstream of the nozzle. A significant part of this region is periodically washed downstream. As its vorticity diffuses, it eventually fills a large portion of the available gap. This large recirculation region, which restricts the mass flow by almost entirely blocking the gap, is proposed as the physical mechanism for the detachment of the downstream meniscus. (C) 2007 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)685-695
Number of pages11
JournalChemical Engineering Science
Issue number3
Publication statusPublished - 1 Feb 2008


  • materials processing
  • spin casting
  • mathematical modelling
  • heat transfer
  • mass transfer
  • fluid mechanics


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