کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
660137 1458122 2010 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Flow instability of evaporative micro-channels
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Flow instability of evaporative micro-channels
چکیده انگلیسی

When boiling occurs in a micro-channel, the growing bubbles could be confined. They expand both upstream and downstream and cause flow instability in the form of flow fluctuations. The instability occurs frequently when the Bond number of the fluid in the micro-channel is less than unity. To reduce the flow instability, installation of an inlet orifice at the upstream or the micro-channel expanding at the downstream are found to be effective. A generalized instability model for micro-channels was established, which includes the effects of both inlet orifice and channel expansion. Experiments of evaporating water in 48 parallel micro-channels with 353 μm hydraulic diameter were conducted, and the generalized instability criterion was validated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 53, Issues 9–10, April 2010, Pages 1740–1749
نویسندگان
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