An experimental study was conducted to visualize the flow field and confirm the transitional Reynolds number from laminar to turbulent flow, as distilled water flows through quartz glass microtubes with inner diameter 315 and 520 μm. With gentian violet as colorant, the flow field pictures in the microtube, and therefore, is shot by a CCD camera with a microscope at different Reynolds numbers. Pressure drop data were also used to characterize the friction factor for those microtubes in the Reynolds number r...
【更新日期】
2005-12-24
【分类号】
TB383
【正文快照】
Fluid flow in microtubes and microchannels has emerged as an important area of re-search. Because advances in microelectro-mechanical systems (MEMS) and other mi-crotechnologies involving fluid transport require the use of microfluidic components, which a
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