This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Numerical and Experimental Investigation and Refinement of Automotive HVAC Flow Induced Noise
Technical Paper
2021-01-1056
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Automotive heating ventilating and air conditioning (HVAC) noise is a very big concern for original equipment manufacturers (OEM) and suppliers. It turns out to be more challenging as the demand for acoustic comfort is increasing day by day. Many times an existing HVAC with some minor changes (mostly the vehicle fitment points) is proposed for face-lift vehicle but the performance expectation is far beyond the existing one due to market demand. One of the critical requirements is enhanced sound quality. To achieve that either experimental testing or numerical simulation is adopted. In either of these cases, it ends up with high number of experiments or increased simulation cost due to aero-acoustic simulation.
Hence a combined approach is followed in order to investigate and improve the noise sources of an existing HVAC. The present paper describes this approach in details by doing numerical flow simulation followed by experimental investigation. HVAC was modeled using computational fluid dynamics (CFD) and a detailed flow simulation was performed. Areas with flow separation, flow vortices and high turbulent kinetic energy (TKE) were identified in the flow domain. After having deep investigation into those areas, existing HVAC was modified to streamline and eliminate the secondary flows. Experiments were carried out on modified HVAC in a semi-anechoic chamber and noise data was captured. It is observed that a substantial improvement is achieved in overall airborne noise level by doing changes as per the suggestions from flow simulations. Thus a combined methodology is developed to improve the sound quality of an automotive HVAC - a novel approach which can be applied even at the design stage and other similar application for airborne noise.
Recommended Content
Authors
Topic
Citation
Sen, S., "Numerical and Experimental Investigation and Refinement of Automotive HVAC Flow Induced Noise," SAE Technical Paper 2021-01-1056, 2021, https://doi.org/10.4271/2021-01-1056.Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Unnamed Dataset 3 | ||
| Unnamed Dataset 4 |
Also In
References
- Gren , E. , Farrall , M. , Mendonça , F. , and Sandhu , K. CFD Prediction of Aeroacoustic Noise Generation in a HVAC Duct AIAA-2012-2068, 18th AIAA/CEAS Aeroacoustics Conference 04 June 2012 Colorado Springs, CO
- Caro , S. , Detandt , Y. , Manera , J. , Toppinga , R. et al. Validation of a New Hybrid CAA strategy and Application to the Noise Generated by a Flap in a Simpli_ed HVAC Duct AIAA-2009-3352, 30th AIAA Aerocoustics Conference Rome, Italy
- Bartenwerfer , M. , Gikadi , T. , Neise , W. , and Agnon , R. Noise Reduction in Centrifugal Fans by Means of An Acoustically Lined Casing Noise Control Engineering 8 1977 100 107
- Case , J.J. and Cuddy , W.A. Application of an Acoustical Resonator to Reduce HVAC Blower Noise Proceedings of the Noise and Vibration Conference Traverse City, Michigan 2001
- Chanaud , R.C. Aerodynamic Sound from Centrifugal-Fan Rotors Journal of the Acoustical Society of America 37 1965 969 974
- Cho , N. and Kim , M. Numerical Investigation of Fluid Flow in an Automotive HVAC Module SAE Technical Paper 971778 1997 https://doi.org/10.4271/971778
- Fischer , D. Airflow Simulation Through Automotive Blowers Using Computational Fluiddynamics SAE Technical Paper 950438 1995 https://doi.org/10.4271/950438
- Gronier , P. and Gilotte , P. Airflow Simulation of an Automotive Blower for a HV AC Unit SAE Technical Paper 960961 1996 https://doi.org/10.4271/960961
- Howe , M.S. Contributions to the Theory of Aerodynamic Sound, with Application to Excess Jet Noise and the Theory of the Flute Journal of Fluid Mechanics 71 1975 625 673
- Kondo , F. and Aoki , Y. Prediction Method on Effect of Thermal Performance of Heat Exchanger Due to Non-uniform Air Flow Distribution SAE Technical Paper 850041 1985 https://doi.org/10.4271/850041
- Lin , C.-H. , Han , T. , and Sumantran , V. Experimental and Computational Studies of Flow in a Simplified HVAC Duct International Journal of Vehicle Design 15 1994 147 165
- Lyons , L.A. and Platter , S. Effects of Cut-off Configuration on Pure Tones Generated by Small Centrifugal Blowers Journal of the Acoustical Society of America 35 1962 1455 1456
- Maling , G.C. Jr. Dimensional Analysis of Blower Noise Journal of the Acoustical Society of America 35 1963 1556 1564
- Moreland , J.B. Housing Effects on Centrifugal Blower Noise Journal of Sound and Vibration 36 2 1974 191 205
- Neise , W. Application of Similarity Laws to the Blade Passage Sound of Centrifugal Fans Journal of Sound and Vibration 43 1 1975 61 75
- Peters , M.E.A.M. 1993
- Shen , F.Z. , Backer , G.P. , and Swanson , D. HVAC Plenum Design Analysis SAE Technical Paper 950113 1995 https://doi.org/10.4271/950113
- Thompson , M.E. , Hourigan , K. , and Stokes , A.N. Prediction of the Noise Generation in a Centrifugal Fan by Solution of the Acoustic Wave Equation International INCE Symposium Senlis, France 1992
- Werner , F. and Frik , S. Optimization of an Automotive HVAC Module by Means of Computational Fluid Dynamics SAE Technical Paper 950439 1995 https://doi.org/10.4271/950439
- Willmarth , W.W. Pressure Fluctuations Beneath Turbulent Boundary Layers Annual Review of Fluid Mechanics 7 1975
- Mavuri , S. , Watkins , S. , Wang , X. , St Hill , S. et al. An Investigation of Vehicle HVAC Cabin Noise SAE World Congress Detroit, United States 2008
- Humbad , N.G. and Thawani , P.T. A Systematic Case Study to Improve Sound Quality of an Automotive Climate Control System Noise-Con 94 Ft. Lauderdale, Florida 1994
- Lee , D. , Perot , F. , Ih , K. , and Freed , D. Prediction of Flow-Induced Noise of Automotive HVAC Systems SAE Technical Paper 2011-01-0493 2011 https://doi.org/10.4271/2011-01-0493
- Tautz , M. , Kaltenbacher , M. , and Becker , S. Numerical Aeroacoustic Noise Prediction for Complex HVAC Systems SAE Technical Paper 2018-01-1515 2018 https://doi.org/10.4271/2018-01-1515
- Martinez-Lera , P. , Hallez , R. , Beriot , H. , and Schram , C. Computation of Sound in a Simplified HVAC Duct Based on Aerodynamic Pressure 18th AIAA/CEAS Aeroacoustics Conference (33rd AIAA Aeroacoustics Conference), Aeroacoustics Conferences
- Jäger , A. , Decker , F. , Hartmann , M. , Islam , M. et al. Numerical and Experimental Investigations of the Noise Generated by a Flap in a Simplified HVAC Duct AIAA Paper 2008-2902, 29th AIAA Aerocoustics Conference May 5-7 2008 Vancouver B.C
- Caro , S. , Detandt , Y. , Manera , J. , Toppinga , R. et al. Validation of a New Hybrid CAA Strategy and Application to the Noise Generated by a Flap in a Simpli_ed HVAC Duct AIAA-2009-3352, 30th AIAA Aerocoustics Conference Rome, Italy
- Gren , E. , Farrall , M. , Mendonça , F. , and Sandhu , K. CFD Prediction of Aeroacoustic Noise Generation in a HVAC Duct AIAA-2012-2068, 18th AIAA/CEAS Aeroacoustics Conference 04-06 June 2012 Colorado Springs, CO
- Brungart , T.A. , Lauchle , G.C. , and Tichy , J.
- Brungart , T.A. , Lauchle , G.C. , and Tichy , J. Case History: Acoustic Diagnostics of an Automotive HVAC System Noise Control Engineering Journal 39 1 1992 31 42
- Humbad , N.G. and Thawani , P.T. A Systematic Case Study to Improve Sound Quality of an Automotive Climate Control System Noise-Con 94 Ft. Lauderdale, Florida 1994
- Madani , V.
- Leite , R.P. , Paul , S. , and Gerges , S.N.Y. A Sound Quality-Based Investigation of the HVAC System Noise of an Automobile Model Applied Acoustics 2009 636 645