کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
662102 1458170 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of transition to turbulence in microchannels
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Characterization of transition to turbulence in microchannels
چکیده انگلیسی

This paper reports on an experimental study characterizing the laminar-turbulent transition for water flow in circular microtubes. Microtubes with diameters in the range 16.6–32.2 μm of varying length were employed over the Reynolds number range 300–3400. The volume flowrate was measured for an imposed pressure differential using a timed displacement technique. Additionally, the viscous heating-induced mean fluid temperature rise was measured. Two independent approaches were used to identify transition from laminar to turbulent flow. Both methods showed transition to occur in the Reynolds number range 2100–2500, consistent with macroscale tube flow behavior.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 49, Issues 17–18, August 2006, Pages 2924–2930
نویسندگان
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