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

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)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.19, no.2, 2007 , pp. 191-201 More about this Journal
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
Hot-wire anemometer; Calibration; Probe angle; Radial angle; Curved duct;
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  • Reference
1 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   DOI   ScienceOn
2 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   DOI   ScienceOn
3 Jorgensen, F. E., 1971, Directional sensitivity of wire and fiber-film probes, DISA Information, Vol. 11, pp, 31-37
4 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   DOI   ScienceOn
5 Bruun, H. H. and Tropea, C., 1985, The calibration of inclined hot-wire probes, J. Phys. E: Sci. Instrum., Vol. 18, pp.405-413   DOI   ScienceOn
6 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   DOI   ScienceOn