Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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Investigation of Single Phase Frictional Pressure Loss in Circular Micro Tubes

  • Han Dong-Hyouck (Research Institute of Engineering & Technology, Korea University) ;
  • Lee Kyu-Jung (Department of Mechanical Engineering, Korea University)
  • Published : 2006.08.01
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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 $118{\mu}m$ diameter with distilled water. Experiments were carried out in laminar flow region with varying the Re 15-450 for the $87{\mu}m$ diameter tubes and 60-1300 for the $118{\mu}m$ diameter tube. No early transition from laminar to turbulent flow was detected for the experimental range. The computational estimation of pressure drop in the $87{\mu}m$ 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.

Keywords

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