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

  • 제19권2호
  • /
  • Pages.191-201
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  • 2007
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  • 1229-6422(pISSN)
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  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지

열선유속계를 이용한 좁은 유로 내 유속 측정법

Velocity Measurement Technique in a Narrow Passage by Hot-wire Anemometer

  • 김원갑 (건국대학교 인공근육연구센터) ;
  • 한성호 (고려대학교 기계공학과 대학원) ;
  • 최영돈 (고려대학교 기계공학과)
  • 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)
  • 발행 : 2007.02.10
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초록

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.

키워드

참고문헌

  1. Jorgensen, F. E., 1971, Directional sensitivity of wire and fiber-film probes, DISA Information, Vol. 11, pp, 31-37
  2. Grande, G. D and Kool, P., 1981, An improved experimental method to determin the complete Reynolds stress tensor with a single rotating slating hot wire, J. Phys, E: Sci. Instrum., Vol. 14, pp.196-201 https://doi.org/10.1088/0022-3735/14/2/014
  3. Kuroumaru, M., Inoue, M., Hikaki, T., Abdelkhalek, F. A. and Ikui, T., 1982, Measurement of three dimensional flow field behind an impeller by means of periodic multi-sampling with a slant wire, Bulletin of JSME, Vol. 25, No. 209, pp.1674-1681 https://doi.org/10.1299/jsme1958.25.1674
  4. Menet, J. L., Valdes, L. C. and Menart, B., 1998, An accurate modelling of the angular voltage output response of a single normal hot wire, Meas. Sci. Technol., Vol. 9, pp. 1715-1720 https://doi.org/10.1088/0957-0233/9/10/011
  5. Menet, J. L., Valdes, L. C. and Menart, B., 1999, An improved model for the directional sensitivity of single yawed hot-wire probes, Meas. Sci. Technol., Vol. 10, pp. N47-N50 https://doi.org/10.1088/0957-0233/10/5/006
  6. Bruun, H. H. and Tropea, C., 1985, The calibration of inclined hot-wire probes, J. Phys. E: Sci. Instrum., Vol. 18, pp.405-413 https://doi.org/10.1088/0022-3735/18/5/011