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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한기계학회 Journal of Mechanical Science and Technology Journal of Mechanical Science and Technology Vol.19 No.7
- 발행연도
- 2005.7
- 수록면
- 1,449 - 1,459 (11page)
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초록· 키워드
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This paper shows the results of local flow speed measurement using tunable AC thermal anemometry, which is suitable for the accurate measurement of wide range flow speed. The measurement accuracy is verified through the comparison between the measurement data and the analytic solution of the sensor temperature oscillation in stationary fluid. The relation between the phase lag and the flow speed is experimentally investigated at various conditions. The measurement sensitivity for low flow speed improves in a low frequency region and that for high flow speed improves in a high frequency region. Also, the sensitivity increases with decreasing thermal conductivity of the surrounding fluid. The local flow speed could be measured as low as 1.5 mm/s and the highest measurement resolution was 0.05 mm/s in the range of 4.5~5.0 mm/s at I Hz in this experiment.
목차
Abstract
1. Introduction
2. Experimental Details
3. Characteristics of Sensor Temperature Oscillation in Stationary Fluid
4. Characteristics of Sensor Temperature Oscillation in Flow Field
5. Summary and Conclusion
Acknowledgments
References
참고문헌 (9)
참고문헌 신청
Cahill, D. G., 1990, "Thermal Conductivity Measurement from 30 to 750 K : the 3ω Method," Review of Scientific Instruments, Vol.61, No.2, pp.802~808.
Carslaw, H. S. and Jaeger, J. C., 1959, "Conduction of Heat in Solids 2nd Edition," Oxford University Press.
Chung, W. S., Kwon, O., Choi, D. S., Park, S., Choi, Y. K. and Lee, J. S., 2004, "Tunable AC Thermal Anemometry," Superlattices and Microstructures, Vol.35, pp.325~338.
Czaplewski, D. A., Hie, B. R., Zalalutdinov, M., Olbricht, W. L., Zehnder, A. T., Craighead, H. G. and Michalske, T. A., 2004, "A Micromechanical Flow Sensor for Microfluidic Applications," Journal of Microelectromechanical Systems, Vol.13, No.4, pp.576~5
Ernst, H., Jachimowicz, A. and Urban, G. A., 2002, "High Resolution Flow Characterization in Bio-MEMS," Sensors and Actuators A, Vol.100, pp.54~62.
Carslaw, H. S. and Jaeger, J. C., 1959, "Conduction of Heat in Solids 2nd Edition," Oxford University Press.
Chung, W. S., Kwon, O., Choi, D. S., Park, S., Choi, Y. K. and Lee, J. S., 2004, "Tunable AC Thermal Anemometry," Superlattices and Microstructures, Vol.35, pp.325~338.
Czaplewski, D. A., Hie, B. R., Zalalutdinov, M., Olbricht, W. L., Zehnder, A. T., Craighead, H. G. and Michalske, T. A., 2004, "A Micromechanical Flow Sensor for Microfluidic Applications," Journal of Microelectromechanical Systems, Vol.13, No.4, pp.576~5
Ernst, H., Jachimowicz, A. and Urban, G. A., 2002, "High Resolution Flow Characterization in Bio-MEMS," Sensors and Actuators A, Vol.100, pp.54~62.
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