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Jeon et al. (2003)Jeon, W-H et al., “A numerical study on the flow and sound fields of centrifugal impeller located near a wedge,” Journal of Sound and Vibration 266, 785-804 (2003).
Tournour et al. (2003)Tournour, M. et al., “Investigation of the tonal noise radiated by subsonic fans using the aero-acosutic analogy,” in Fan noise conference 2003, Senlis, France (2003).
Lee et al. (2010)Lee, S. et al., “The prediction and reduction of the internal blade-passing-frequency noise of the centrifugal fan in a refrigerator,” Int. J. Refrigeration 33, 1129-1141 (2010).
Mao et al. (2009)Mao, Y. and Qi, D. , “Computation of rotating blade noise scattered by a centrifugal volute,” Proc. Inst. Mech. Eng. A. 223(8), 965-972 (2009).
Heo et al. (2011)Heo, S. et al., “Development of low-noise centrifugal fans for a refrigerator using inclined S-shaped trailing edge,” Int. J. Refrigeration 34, 2076-2091 (2011).
Sorguven et al. (2009)Sorguven, E. et al., “Noise prediction via large eddy simulation: application to radial fans,” Noise control Eng. J 57, 169-178 (2009).
Qiang et al. (2014)Qiang, K. et al., “Study on the aerodynamic noise of internal flow of regenerative flow compressors for a fuel-cell car,” Journal of mechanical engineering science 228, 1155-1174 (2014).
Ffowcs-Williams and Hawkings (1969)Ffowcs-Williams, J.E. and Hawkings, D.L. , “Sound generation by turbulence and surfaces in arbitrary motion,” Philos. Trans. Roy. Soc. 264, 321-342 (1969).
Bechara et al. (1994)Bechara, W. et al., “Stochastic approach to noise modeling for free turbulent flows,” AIAA. J. 31, 445-463 (1994).
Bailly et al. (1996)Bailly, C. et al., “Computation of noise generation and propagation for free and confined turbulent flow,” in AIAA conference (1996), pp. 96-1732.
Ewert et al. (2007)Ewert, R. , “RPM – the fast Random Particle-Mesh method to realize unsteady turbulent sound sources and velocity fields for CAA applications,” in 28th AIAA aeroacoustics conference (2007).
Ewert et al. (2008)Ewert, R. , “Broadband slat noise prediction based on CAA and stochastic sound sources from a fast random particle-mesh (RPM) method,” Computers & Fluids 37, 369-387 (2008).
Ewert et al. (2011)Ewert, R. et al., “CAA broadband noise prediction for aeroacoustic design,” Journal of sound and vibration 330, 4139-4160 (2011).
Cheong et al. (2014)Cheong, C. et al., “Cyclostationary spectral analysis for the measurement and prediction of wind turbine swishing noise,” Journal of sound and vibration 333, 3153-3176 (2014).
Velarde Suárez et al. (2006)Velarde-Suarez, S. et al., “Experimental determination of the tonal noise sources in a centrifugal fan,” J. Sound Vibrat. 295, 781-796 (2006).
Lighthill’s acoustic analogy (1952)Lighthill, M.J. , “On sound generated aerodynamically, I. General theory,” Proc. Roy. Soc 211A, 564-587 (1952).
Curle (1955)Curle, N. , “The influence of solid boundaries on aerodynamic sound,” Proc. Roy. Soc. 231A, 505-514 (1955).
Cheong et al. (2008)Cheong, C. et al., “Computation of Aeolian tone from a circular cylinder using source models,” Appl. Acoust. 69, 110-126 (2008).
Dieste et al. (2010)Dieste, D. et al., “Random-vortex-particle methods for broadband fan interaction noise,” in AIAA conference (2010).
Casalino et al. (2010)Casalino, D. et al., “One, no one and one hundred thousand methods for low speed fan noise prediction,” International Journal of aeroacoustics 9, 307-327 (2010).

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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.


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