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Numerical Simulation of Aerodynamic Noise in a Turbocharger
Technical Paper
2015-01-2243
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Turbocharger is an important part of the turbocharged diesel engine. Due to the increase of mass flow rate and pressure ratio, aerodynamic noise of turbocharger has become more apparent. And turbocharger noise becomes one of the major noise sources of the main engine system of the ship. In the paper, the aerodynamic noise is predicted by using Computational fluid mechanics (CFD) and indirect boundary element method (IBEM) based on Lighthill acoustic analogy theory. Unsteady viscous flow in the centrifugal Compressor is simulated with finite volume method using the single stator and rotor blade passages and the characteristic of compressor is agreed well with the experimental value. The flow field characteristics and frequency spectrum of the fluctuating pressure are analyzed which agree well with the theoretical value. Dipole is the main noise source in compressor and the datum of pressure fluctuation at rotor blade are extracted. The boundary element model of the volute is established and the scattering effect on sound propagation is taken into account. Using indirect boundary element method, radiation noise field at compressor entrance at the blade passing frequency and its harmonics are predicted. The results can provide a useful reference to low noise design and structure optimization of centrifugal compressor.
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Citation
Liu, Y., Ming, P., Zhang, W., and Zhang, X., "Numerical Simulation of Aerodynamic Noise in a Turbocharger," SAE Technical Paper 2015-01-2243, 2015, https://doi.org/10.4271/2015-01-2243.Also In
References
- Chen , M. , and Wu , M. Vortex simulation of rotor/stator interaction in turbomachinerym Trans, ASME 1999 121 358 364
- Kameier , F. , and Neise , W. Rotating blade flow instability as a source of noise in axial turbomachines Journal of Sound and Vibration 1997 203 5 833 853
- Fukano , T. Tip Clearance Noise of Axial Flow Fans Operating at Design and Off-design Condition Journal of Sound and Vibration 2004 275 3 5 1027 1050
- Velarde-Suarez andra ., Ballesteros-Tajadura Rafael ., Hurtado-Cruz Juan Pablo ., and Santolaria-Morros Carlos Experimental determination of the tonal noise sources in a centrifugal fan Journal of Sound and Vibration 2006 295 3 5 781 796
- Jeon , W.H. , Lee , D. J. An analysis of the flow and sound source of an annular type centrifugal fan Proceedings of the5th International Congress on Sound and Vibration Adelaide, Australia 1997 1333 1340
- Jeon , W. H. , Lee , D. J. An analysis of the flow and aerodynamic acoustic sources of a centrifugal impeller J. Sound Vibr. 1999 222 505 511
- Langthjem , M.A. , and Olhoff , N. A numerical study of flow-induced noise in a two-dimensional centrifugalpump Part I. Hydrodynamics. J. Fluid Struct. 2004 19 349 368
- Langthjem , M.A. , and Olhoff , N. A numerical study of flow-induced noise in a two-dimensional centrifugalpump Part II. Hydroacoustics. J.Fluids Struct. 2004 19 369 386
- Liu , Q. , Qi , D. , and Mao , Y. Numerical simulation of centrifugal fan noise. Proceedings of Institute of Mechanical Engineering Part C: J. Mechanical Engineering Science 2006 220 1167 1178
- Liu , Q. , Qi , D. , and Mao , Y. Computation of aerodynamic noise of centrifugal fan using LES approach, acoustic analogy and vortex sound theory. Proceeding of Institute Mechanical Engineering Part C: J. Mechanical Engineering Science 2007 221 1321 1332