Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지
DOI QR코드

DOI QR Code

Identification of Noise Source of the HVAC Using Complex Acoustic Intensity Method

복소음향인텐시티법을 이용한 HVAC의 소음원 검출

  • 양정직 (자동차부품연구원 기업지원신뢰성본부) ;
  • 이동주 (충남대학교 기계공학과)
  • Received : 2010.10.13
  • Accepted : 2010.11.08
  • Published : 2010.11.20
Download PDF
⟨ Previous Next ⟩

Abstract

The relation between the vibration induced from machinery and the radiated sound is complicated. Acoustic intensity method is widely used to obtain the accuracy of noise measurement and noise identification. In this study, as groundwork, the complex acoustic intensity method is performed to identify noise source and transmission path on different free space point source fields. As an industrial application, the complex acoustic intensity method is applied to HVAC to identify sound radiation characteristics in the near field. Experimental complex acoustic intensity method was applied to HVAC, it is possible to identify noise sources in complicated sound field characteristics which noise sources are related with each other, and certificate the validity of complex acoustic intensity. Especially, it can be seen that complex acoustic intensity method using both of active and reactive intensity is vital in devising a strategy for identification of noise. Also, the vector flow of acoustic intensity was investigated to identify sound intensity distributions and energy flow in the near field of HVAC.

Keywords

References

  1. Kim, S. H., Ahn, J. H. and Oh, J. E., 1997, “Acoustic Radiation Characteristics from Flexible Steel Plate Excited by Acoustic Loading in an Rectangular Enclosure”, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 7, No. 3, pp. 457-466
  2. Oh, J. E., Kim, S. H. and Han, K. H., 1998, “Identification of Noise Source of a Diesel Engine Using Complex Acoustic Intensity Method,” SAE Paper, Vol. 6, No. 1, pp. 182-195.
  3. Fahy, F. J., 1987, “Sound Intensity,” Elsevier Applied Science.
  4. Ginn, K. B., 1988, “Sound Description Using Complex Sound Intensity Instrumentation,” B&K.
  5. Park, D. W., 1994, “Behavior of Noise Source for Shape Modification of Plate by Acoustic Intensity Method,” Hanyang University Press.
  6. Oshino, Y., et al., 1988, “Complex Acoustic Intensity and It’s Application,” Journal of the JSAE, Vol. 42, No. 12, pp. 1587-1595.
  7. Junger, M. C. and Feit, D., 1994, “Sound, Structures, and Their Interaction,” The MIT Press, pp. 92-149.