Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Velocity Measurement Technique in a Narrow Passage by Hot-wire Anemometer

열선유속계를 이용한 좁은 유로 내 유속 측정법

  • Kim, Won-Kap (Artificial Muscle Research Center, Konkuk University) ;
  • Han, Seong-Ho (Graduate School of Mechanical Engineering, Korea University) ;
  • Choi, Young-Don (department of Mechanical Engineering, Korea University)
  • 김원갑 (건국대학교 인공근육연구센터) ;
  • 한성호 (고려대학교 기계공학과 대학원) ;
  • 최영돈 (고려대학교 기계공학과)
  • Published : 2007.02.10
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Abstract

It was noted by the several researchers that the voltage outputs in response to a single yawed hot-wire sensor in a flow perpendicular to the axis deviate from the theoretical voltage output by King's law and Jorgensen's relation. This study noticed that the calibration coefficients of original Grande's method are not constant and fairly sensitive to the radial angle (${\alpha}_{R}$). For more accuracy, this study interpolated the parameters of the Grande relation as a function of radial angle and compared velocity components with ones by Jorgensen and original Grande relation in the calibration jet flow. Finally, as a test case, 3-dimensional turbulent flows of the inlet plane of 180 degree bend are measured and compared the velocity components by above three methods and showed the characteristics of the flows.

Keywords

References

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