کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
159378 457035 2008 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solidification and downstream meniscus prediction in the planar-flow spin casting process
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Solidification and downstream meniscus prediction in the planar-flow spin casting process
چکیده انگلیسی

A 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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 63, Issue 3, February 2008, Pages 685–695
نویسندگان
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