JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Mean Flow Velocity Measurement Using the Sound Field Reconstruction
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Mean Flow Velocity Measurement Using the Sound Field Reconstruction
Kim, Kun-Soon; Cheung, Wan-Sup; Kwon, Hyu-Sang; Park, Kyung-Am; Paik, Jong-Seung; Yoo, Seong-Yeon;
  PDF(new window)
 Abstract
This paper addresses a new technique of measuring the mean flow velocity over the cross sectional area of the pipe using sound field reconstruction. When fluid flows in the pipe and two plane waves propagate oppositely through the medium, the flow velocity causes the change of wave number of the plane waves. The wave number of the positive going plane wave decreases and that of negative going one increases in comparison to static medium in the pipe. Theoretical backgrounds of this method are introduced in detail and the measurement of mean flow velocity using the sound field reconstruction is not affected by velocity profile upstream of microphones.
 Keywords
Acoustic Pressure;Mach Number;Mean Flow Velocity;Phase;Plane Wave;Speed of Sound;Wave Number;
 Language
Korean
 Cited by
 References
1.
백종승 외, 1997, '초정밀 측정 및 응용 기술개발 사전 연구 조사,' KRISS-97-009-IR

2.
Miller, R.W., 1983, Flow Measurement Engineering Handbook, McGraw Hill

3.
White, R.G. and Walker, J.G., 1982, 'Noise and Vibration', Chap. 12 Fundamental duct acoustics, John Wiley & Sons, NY

4.
Mungur, P. and Gladwell, G.M.L., 1969, 'Acoustic Wave Propagation in a Sheared Fluid Contained in a Duct,' J. Sound Vib. Vol. 9, pp. 28-48 crossref(new window)

5.
전영두, 김양한, 정완섭, 1998, '다수의 마이크로폰을 이용한 관내의 평균유속 측정,' 대한기계학회논문집 A. pp. 1761-1768

6.
Wan-Sup Cheung, Moon-Jae Jho and Yang-Hann Kim, 1995, 'Improved Method for the Measurement of Acoustic Properties of a Sound Absorbent Sample in the Standing Wave Tube,' J. Acoust. Soc. Am. Vol. 97, pp. 2733-2739 crossref(new window)