An Analysis of the acoustic source and radiation acoustic field of centrifugal fans

원심팬 음원 및 방사 음향장 해석

  • 전완호 (한국과학기술연구원 항공우주공학과) ;
  • 이덕주 (한국과학기술연구원 항공우주공학과)
  • Published : 1998.12.01


The objective of this study is to understand the generation mechanism of sound and to develop a prediction method for the unsteady flow field and the acoustic pressure field of a centrifugal fan. Lowson's method is used to predict the acoustic pressure in a free field. A DVM(discrete vortex method) is used to model the centrifugal fan and to calculate the flow field. In order to compare the experimental data, a centrifugal fan and wedge introduced by Weidemann are used in the numerical calculation and the results are compared with the experimental data.