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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2005.10
- 수록면
- 1,119 - 1,129 (11page)
이용수
초록· 키워드
오류제보하기
A new measurement system of wall pressure fluctuations on a rotating machinery, composed of digital recording device, was developed, evaluated. The small-sized digital recording device was attached on the rotating machinery, then was detached for data reduction. In order to obtain the system transfer function of the digital recording system, a dynamic calibration was performed utilizing the signal from a 1/8 inch B&K microphone as input. The time history of the unsteady pressure was then reconstructed from the output of the sensor by using this transfer function. The reconstructed pressure signals showed good agreement with the reference signal in both temporal, spectral sense. This sensor was then used to measure the wall pressure fluctuations on a rotating blade. An array of microphones were installed on the blade in the circumferential, radial directions. Various statistical moments were obtained from the measurement data set. Comparison of these quantities with the existing studies demonstrated satisfactory agreement. These tests give credence to the relevance, reliability of this device for applications in more complicated turbulent rotating machineries.
목차
Abstract
1. 서론
2. 실험 장치
3. 결과 및 고찰
4. 결론
후기
참고문헌
참고문헌 (13)
참고문헌 신청
Choi, M.S., Kim, J.H. and Lee, Y.H., 2004, "A Study on Aerodynamic and Analysis and Design of Wind Turbine Blade," J. the Korean Society of Marine Engineers, Vol. 28, No. 5, pp. 847~852.
Farabee, T.M. and Casarella, M.J., 1986, "Measurement of Fluctuating Wall Pressure for Separated/Reattached Boundary Layer," J. Sound Vib., Vol. 19, pp. 1092~1110.
Lee, I. and Sung, H.J., 1999, "Development of an Array of Pressure Sensors with PVDF Film," Exp. Fluids, Vol. 26, No. 1, pp. 27~35.
Curle, N., 1955, "The Influence of Solid Boundaries upon Aerodynamics Sound," Proc. R. Soc. Lond., Vol. 231, pp. 505~514.
Fflows Williams, J.E. and Hawkings, D.L., 1969, "Sound Generation by Turbulence and Surface in Arbitary Motion," Phil. Trans. R. Soc. Lond., Vol. 264, p. 321.
Farabee, T.M. and Casarella, M.J., 1986, "Measurement of Fluctuating Wall Pressure for Separated/Reattached Boundary Layer," J. Sound Vib., Vol. 19, pp. 1092~1110.
Lee, I. and Sung, H.J., 1999, "Development of an Array of Pressure Sensors with PVDF Film," Exp. Fluids, Vol. 26, No. 1, pp. 27~35.
Curle, N., 1955, "The Influence of Solid Boundaries upon Aerodynamics Sound," Proc. R. Soc. Lond., Vol. 231, pp. 505~514.
Fflows Williams, J.E. and Hawkings, D.L., 1969, "Sound Generation by Turbulence and Surface in Arbitary Motion," Phil. Trans. R. Soc. Lond., Vol. 264, p. 321.
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