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

Fingerprint

unsteady flow
flow distribution
fans
air
fan blades
computational aeroacoustics
struts
suction
blades
fixing
Navier-Stokes equation
rooms
vortices
cooling
acoustics

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.
Lim, Tae Gyun ; Jung, Jae Hyuk ; Jeon, Wan Ho ; Joo, Won Gu ; Minorikawa, Gaku. / 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.
@conference{02f85126d7254550a29a3f80707f99e2,
title = "Characteristics of unsteady flow field and flow-induced noise in outdoor unit of an air conditioner",
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.",
author = "Lim, {Tae Gyun} and Jung, {Jae Hyuk} and Jeon, {Wan Ho} and Joo, {Won Gu} and Gaku Minorikawa",
year = "2017",
month = "1",
day = "1",
language = "English",
note = "46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017 ; Conference date: 27-08-2017 Through 30-08-2017",

}

Lim, TG, Jung, JH, Jeon, WH, Joo, WG & 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, 17/8/27 - 17/8/30, .

Characteristics of unsteady flow field and flow-induced noise in outdoor unit of an air conditioner. / Lim, Tae Gyun; Jung, Jae Hyuk; Jeon, Wan Ho; Joo, Won Gu; Minorikawa, Gaku.

2017. Paper presented at 46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017, Hong Kong, China.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Characteristics of unsteady flow field and flow-induced noise in outdoor unit of an air conditioner

AU - Lim, Tae Gyun

AU - Jung, Jae Hyuk

AU - Jeon, Wan Ho

AU - Joo, Won Gu

AU - Minorikawa, Gaku

PY - 2017/1/1

Y1 - 2017/1/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85042031601&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85042031601&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85042031601

ER -

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