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On the Aerodynamics of the Notchback Open Cooling DrivAer: A Detailed Investigation of Wind Tunnel Data for Improved Correlation and Reference
ISSN: 0148-7191, e-ISSN: 2688-3627
To be published on April 06, 2021 by SAE International in United States
Event: SAE WCX Digital Summit
Since the introduction of the DrivAer in 2012 (Heft et al) this model has become the standard generic aerodynamic benchmark and aerodynamic research model used by automotive OEMs, software vendors and researchers. In 2017, the relevance of the DrivAer has been furthered by the inclusion of a simplified engine bay (Hupertz et al). Whilst the DrivAer has become the popular standard, the availability of detailed wind tunnel test data, a key enabler for more sophisticated aerodynamic benchmarking and research, remains limited. This paper presents an in-depth analysis of the aerodynamics measurements of the notchback version of the Ford Open Cooling DrivAer (OCDA), including almost 300 surface pressure probes and flow field measurements at 4 cross-sections in the vicinity of the model. In addition, the paper will outline sensitivity of the data to wind tunnel repeatability and facility-to-facility variations. Finally, a comparison of test results obtained for the Ford and the Hyundai DrivAer model will demonstrate the sensitivity of the measured aerodynamic characteristics to physical model build.
- Burkhard Hupertz - Ford Motor Company
- Karel Chalupa - Ford Motor Company
- Lothar Krueger - Ford Motor Company
- Kevin Howard - Ford Motor Company
- Hans-Dieter Glueck - Ford Motor Company
- Neil Lewington - Ford Motor Company of Australia, Ltd.
- Jin-Hyuck Chang - Hyundai Motor Company
- Yong-su Shin - Hyundai Motor Company