Investigation of single phase frictional pressure loss in circular micro tubes |
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| Authors: | Donghyouck Han Kyu-Jung Lee |
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| Affiliation: | (1) Research Institute of Engineering & Technology, Korea University, 136-701 Seoul, Korea;(2) Department of Mechanical Engineering, Korea University, 136-701 Seoul, Korea |
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| Abstract: | Single phase pressure drops in micro tubes were investigated through an experimental measurement and a numerical simulation.
Experimental Po was obtained in circular micro tubes with 87 and 118 μm diameter with distilled water. Experiments were carried
out in laminar flow region with varying the Re 15–450 for the 87 μm diameter tubes and 60–1300 for the 118 μm diameter tube.
No early transition from laminar to turbulent flow was detected for the experimental range. The computational estimation of
pressure drop in the 87 μm diameter tube was performed with the aid of CFD software. Boundary conditions from experiments
were used for the numerical simulation. The results of experimental and numerical studies showed a good agreement with the
conventional macro theory. |
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| Keywords: | Microfluidics Pressure Drop Circular Micro Channel Polyetheretherketone Viscous Dissipation Entry Length Roughness Developing Region |
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