Prediction and reduction of internal blade-passing frequency noise of the centrifugal fan in a refrigerator

Lee, Seungyub; Heo, Seongmin; Cheong, Cheolung

doi:10.1016/j.ijrefrig.2010.03.006

Cited by 38 publications

(18 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Velarde Suárez et al (2006) experimentally found that a volute tongue region of a centrifugal fan unit contributed greatly to tonal noise. Lee et al (2010) and Heo et al (2011) showed that the prediction results by using the H-CAA method with sources near the volute tongue region were in good agreement with the measured at the BPFs. the computed rms values of the turbulent kinetic energy.…”

Section: Predictions Of Noise From Centrifugal Fan Unit Using H-supporting

confidence: 52%

“…The H-CAA method used by Lee et al (2010) is employed to predict noise radiated from the centrifugal fan unit. Figure 4 schematically illustrates the procedure of the H-CAA method.…”

Section: Predictions Of Noise From Centrifugal Fan Unit Using H-mentioning

confidence: 99%

“…They showed that noise prediction technique using acoustic BEM can consider scattering effect on sound propagation. Lee et al (2010) presented Hybrid CAA (H-CAA) method for efficiently predicting an internal aerodynamic noise of a centrifugal fan unit in a household refrigerator. The H-CAA method consists of three sequential steps.…”

Section: Introductionmentioning

confidence: 99%

“…The proposed numerical method is based on the H-CAA method combined with Unsteady Fast Random Particle Mesh (U-FRPM) method. The H-CAA method used by Lee et al (2010) is employed to predict the internal aerodynamic noise of a centrifugal fan unit. Although the results predicted using the H-CAA method show good agreements with the measured data at the BPFs in low frequency range, broadband noise in high frequency range are under-estimated.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Unsteady Fast Random Particle Mesh method for efficient prediction of tonal and broadband noises of a centrifugal fan unit

Heo

Cheong

Kim³

2015

AIP Advances

Self Cite

View full text Add to dashboard Cite

In this study, efficient numerical method is proposed for predicting tonal and broadband noises of a centrifugal fan unit. The proposed method is based on Hybrid Computational Aero-Acoustic (H-CAA) techniques combined with Unsteady Fast Random Particle Mesh (U-FRPM) method. The U-FRPM method is developed by extending the FRPM method proposed by Ewert et al. and is utilized to synthesize turbulence flow field from unsteady RANS solutions. The H-CAA technique combined with U-FRPM method is applied to predict broadband as well as tonal noises of a centrifugal fan unit in a household refrigerator. Firstly, unsteady flow field driven by a rotating fan is computed by solving the RANS equations with Computational Fluid Dynamic (CFD) techniques. Main source regions around the rotating fan are identified by examining the computed flow fields. Then, turbulence flow fields in the main source regions are synthesized by applying the U-FRPM method. The acoustic analogy is applied to model acoustic sources in the main source regions. Finally, the centrifugal fan noise is predicted by feeding the modeled acoustic sources into an acoustic solver based on the Boundary Element Method (BEM). The sound spectral levels predicted using the current numerical method show good agreements with the measured spectra at the Blade Pass Frequencies (BPFs) as well as in the high frequency range. On the more, the present method enables quantitative assessment of relative contributions of identified source regions to the sound field by comparing predicted sound pressure spectrum due to modeled sources.

show abstract

Section: Predictions Of Noise From Centrifugal Fan Unit Using H-supporting

confidence: 52%

“…The H-CAA method used by Lee et al (2010) is employed to predict noise radiated from the centrifugal fan unit. Figure 4 schematically illustrates the procedure of the H-CAA method.…”

Section: Predictions Of Noise From Centrifugal Fan Unit Using H-mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Unsteady Fast Random Particle Mesh method for efficient prediction of tonal and broadband noises of a centrifugal fan unit

Heo

Cheong

Kim³

2015

AIP Advances

Self Cite

View full text Add to dashboard Cite

show abstract

“…Heo et al [3] 은 Lee et al [2] 에 의해 제시된 H-CAA 방법을 이용하여 원심 팬의 순음소음을 예측하고, 이를 저감하기 위한 기 울어진 S-형상의 날개깃 뒷전을 가지는 원심팬을 개 발하였다. 또한 Heo et al [4] 은 Heo et al [5] 은 Fourier 모드 중첩에 기초한 통계적 난류 합성법 [6,7] 과 H-CAA 방법을 결합한 팬 광대역 소음 예측 기법을 개발하였고, 이를 냉장고 얼음제 조용 원심팬에 적용하여 효율적으로 원심팬의 내부 광대역소음을 예측하였다.…”

Section: U-frpm 기법을 이용한 원심팬 광대역소음의 효율적 예측unclassified

Efficient Prediction of Broadband Noise of a Centrifugal Fan Using U-FRPM Technique

Heo

Cheong

2015

The Journal of the Acoustical Society of Korea

View full text Add to dashboard Cite

Recently, a lot of studies have been made about the methods used to generate turbulent velocity fields stochastically in order to effectively predict broadband flow noise. Among them, the FRPM (Fast Random Particle Mesh) method which generates turbulence with specific statistical properties using turbulence kinetic energy and dissipation obtained from the steady solution of the RANS (Reynolds Averaged Navier-Stokes) equations has been successfully applied. However, the FRPM method cannot be applied to the flow noise problems involving intrinsic unsteady characteristics such as centrifugal fan. In this paper, to effectively predict the broadband noise generated by centrifugal fan, U-FRPM (unsteady FRPM) method is developed by extending the FRPM method to be combined with the unsteady numerical solutions of the unsteady RANS equations to generate the turbulence considered as broadband noise sources. Firstly, an unsteady flow field is obtained from the unsteady RANS equations through CFD (Computational Fluid Dynamics). Then, noise sources are generated using the U-FRPM method combined with acoustic analogy. Finally, the linear propagation model which is realized through BEM (Boundary Element Method) is combined with the generated sources to predict broadband noise at the listeners' position. The proposed technique is validated to compare its prediction result with the measured data.

show abstract

Numerical and Experimental Testing of the WLS Series Axial Fans Used for Local Ventilation of Underground Excavations

Moczko

Więckowski

Odyjas

2019

Lecture Notes in Mechanical Engineering

View full text Add to dashboard Cite

Prediction and reduction of internal blade-passing frequency noise of the centrifugal fan in a refrigerator

Cited by 38 publications

References 10 publications

Unsteady Fast Random Particle Mesh method for efficient prediction of tonal and broadband noises of a centrifugal fan unit

Unsteady Fast Random Particle Mesh method for efficient prediction of tonal and broadband noises of a centrifugal fan unit

Efficient Prediction of Broadband Noise of a Centrifugal Fan Using U-FRPM Technique

Numerical and Experimental Testing of the WLS Series Axial Fans Used for Local Ventilation of Underground Excavations

Contact Info

Product

Resources

About