Direct Aeroacoustics Predictions of Automotive HVAC Systems based on Lattice Boltzmann Method

The demand for low noise level in vehicle cabin continues to rise lately. In particular, noise generated by eco-friendly cars such as hybrid and electric ones tends to become lower and lower. In this market environment, the noise contributions caused by HVAC systems are also increasing. Therefore, it becomes increasingly important to accurately predict noise generated by HVAC systems and analyze the noise sources and resolve the noise issue. In this study, direct acoustics prediction approach based on Lattice Boltzmann Method is applied to predict the flow-induced noise from HVAC systems including blower and ducts and find noise sources. In order to validate the simulation result, acoustics measurements are performed on HVAC systems in an anechoic room and the results are compared to each other. A new technique is applied to finding a noise source for a specific frequency and shows improved noise level through modifying the geometry related to noise sources detected by the simulation.

• Record URL:
  • https://doi.org/10.4271/2018-01-1520
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Jung, Wooyoul
  • Cha, Yongkil
  • Song, Sunghun
  • Byun, Sungjun
  • Ho, Sunghwan
  • Kim, Minsuk
• Conference:
  • 10th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference
  • Location: Graz , Austria
  • Date: 2018-6-20 to 2018-6-22
• Publication Date: 2018-6-13

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Acoustic properties; Air conditioning systems; Heating systems; Mathematical prediction; Noise; Passenger compartments; Ventilation systems
• Uncontrolled Terms: Aeroacoustics
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01686815
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2018-01-1520
• Files: TRIS, SAE
• Created Date: Nov 26 2018 4:55PM