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HVAC Noise Prediction Using Lighthill Wave Method
Technical Paper
2023-01-1125
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Automotive Heating Ventilation and Air Conditioning (HVAC) system is essential in providing the thermal comfort to the cabin occupants. The HVAC noise which is typically not the main noise source in IC engine vehicles, is considered to be one of the dominant sources inside the electric vehicle cabin. As air is delivered through ducts and registers into the cabin, it will create an air-rush/broadband noise and in addition to that, any sharp edges or gaps in flow path can generate monotone/tonal noise. Noise emanating from the HVAC system can be reduced by optimizing the airflow path using virtual tools during the development stage. This paper mainly focuses on predicting the noise from the HVAC ducts and registers.
In this study, noise simulations were carried-out with ducts and registers. A Finite Volume Method (FVM) based 3-dimensional (3D) Computational Fluid Dynamics (CFD) solver was used for flow as well as acoustic simulations. Large Eddy Simulation (LES) was used for flow field generation and noise characteristics were studied using a hybrid Lighthill Wave Model (LWM). The frequency response of the aeroacoustic noise from the ducts and registers were predicted using the simulations and the models were compared in terms of Overall Average Sound Pressure Level (OASPL). The simulated spectra exhibit good correlation with the test data.
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Citation
George, B., Garikipati, N., Doroudian, M., Horne, K. et al., "HVAC Noise Prediction Using Lighthill Wave Method," SAE Technical Paper 2023-01-1125, 2023.Also In
References
- Jäger , A. , Decker , F. , Hartmann , M. , and Islam , M. Numerical and Experimental Investigations of the Noise Generated by a Flap in a Simplified HVAC Duct 29th AIAA Aeroacoustics Conference 10.2514/6.2008-2902
- Sah , M. , Srinivasan , K. , Mendonca , F. , and Pai , N. Prediction of HVAC System Aero/Acoustic Noise Generation and Propagation using CFD SAE Technical Paper 2013-01-0856 2013 10.4271/2013-01-0856
- Aissaoui , A. , Tupake , R. , Bijwe , V. , Meskine , M. et al. Flow-Induced Noise Optimization of SUV HVAC System using a Lattice Boltzmann Method SAE Int. J. Passeng. Cars - Mech. Syst. 8 3 2015 1053 1062 10.4271/2015-01-2323
- Tautz , M. , Kaltenbacher , M. , and Becker , S. Numerical Aeroacoustic Noise Prediction for Complex HVAC Systems SAE Technical Paper 2018-01-1515 2018 10.4271/2018-01-1515
- Lee , D. , Lee , M. , Ih , K. , Kim , M. et al. Aeroacoustics Predictions of Automotive HVAC Systems SAE Technical Paper 2010-01-0415 2010 10.4271/2010-01-0415
- Perot , F. , Kim , M. , Freed , D. , Lee , D. et al. Direct Aeroacoustics Prediction of Ducts and Vents Noise 16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference) 10.2514/6.2010-3724
- Pasupuleti , S. , Horne , K. , Beedy , J. , Guzman , A. et al. Acoustic Performance Analysis of Automotive HVAC Duct Designs Using a Lattice-Boltzmann Based Method and Correlation with Hemi-Anechoic Chamber SAE Technical Paper 2020-01-1263 2020 10.4271/2020-01-1263
- Lighthill , M.J. On Sound Generated Aerodynamically. I. General Theory Proceedings of the Royal Society of London A: Mathematical, Physical and Engineering Sciences 211 1952 564 587 10.1098/rspa.1952.0060