Characteristics of unsteady flow field and flow-induced noise in outdoor unit of an air conditioner

Tae Gyun Lim, Jae Hyuk Jung, Wan Ho Jeon, Won Gu Joo, Gaku Minorikawa

Research output: Contribution to conferencePaper

Abstract

This study was conducted to clarify the characteristics of unsteady flow field and flow-induced noise generated by an axial fan in outdoor unit of an air conditioner. In this study, Three-dimensional Navier-Stokes equations and the simplified Ffowcs Williams and Hawkings(FW-H) equation were solved to predict the unsteady flow field and the noise, respectively. The noise of an axial cooling fan in an outdoor unit was measured in semi-Anechoic room, and then compared with the result from computational aeroacoustics. The predicted noise obtained from computation agreed qualitatively with one of the experiment. The sound sources were found at the tip and at suction side of each blade. The reason is caused by tip vortex and short distance between fan's blade and strut to fix a motor and fan.

Original languageEnglish
Publication statusPublished - 2017 Jan 1
Event46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017 - Hong Kong, China
Duration: 2017 Aug 272017 Aug 30

Other

Other46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017
CountryChina
CityHong Kong
Period17/8/2717/8/30

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All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

Cite this

Lim, T. G., Jung, J. H., Jeon, W. H., Joo, W. G., & Minorikawa, G. (2017). Characteristics of unsteady flow field and flow-induced noise in outdoor unit of an air conditioner. Paper presented at 46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017, Hong Kong, China.