Prediction of automotive HVAC duct acoustic properties via innovative simulation techniques

Öz

or the automotive industry, acoustic comfort is of increasing importance. Customer expectations and strong competition in the market play an important role to accelerate vehicle development activities. Although the primary function of HVAC (Heating ventilation and Air-conditioning) is thermal comfort of the occupant during ride; acoustic comfort is also important when it comes to customer satisfaction resulting in overall experience of the vehicle. Hence, prediction of cabin interior noise in the early design stage plays an important role in designing a superior quality product.
In this paper, cabin interior noise levels generated by HVAC systems are predicted by using computational 1-D (one dimensional) analysis. 3-D (three dimensional) CAD geometry is designed using SOLIDWORKS and 1-D analysis is done on GT-Suite. Main purpose of this paper is to demonstrate how 1-D simulation can be an aid for a duct designer by predicting the NVH characteristic of HVAC Ducts and continuing the research to shorten the product development timelines.

Anahtar Kelimeler

• HVAC
• Numerical Simulation
• Acoustics
• 1D Analysis
• NVH

Kaynakça

1. Aissaoui A., Tupake S R., Bijwe V., Meskine M., Perot F., Belanger A., Vaidya R.J., “Flow-Induced Noise Optimization of SUV HVAC System using a Lattice Boltzmann”, SAE Technical Paper, 2015-01-2323, DOI: 10.4271/2015-01-2323, July 06, 2015.
2. Eckstein L., “Automotive Engineering III”, RWTH Aachen University, Chapter 5, p.101-115.
3. Madani V. and Ziada S., “Aeroacoustic Characteristics of Automotive HVAC Systems”, SAE Technical Paper, ISSN 0148-7191, April 14-17, 2008.
4. Kale G., Kulkarni M. A., Arun, S., Bhagate R., “NVH challenges and solutions to mitigate cabin noise in electric vehicles”, IEEE, DOI: 10.1109/ITEC-India.2015.7386867, January 21, 2016.
5. http://cfdtraining.epizy.com/?i=1, 14/12/2020.
6. Karel, V., Genechten, B.V., Vandepitte, D., Desmet, W., “On the analysis of vibro-acoustic systems in the mid-frequency range using a hybrid deterministic-statistical approach”, Science Direct, Volume 89, Issues 11–12, Pages 868-877, DOI: 10.1016/j.compstruc.2011.03.002, June 2011.
7. Vasanth, B., Sathish, K., Govindarajalu, M., and Khan, M., “A Novel Approach to Predict HVAC Noise Using 1D Simulation,” SAE Technical Paper, 2016-01-0249, DOI: 10.4271/2016-01-0249, 2016.
8. https://www.press.bmwgroup.com/global/article/detail/T0264349EN/the-new-bmw-5-series-sedan?language=en, 17/05/2020.