NDLI: Experimental study comparing racecar aerodynamic downforce-generating devices using scale model NASCAR COT

Content Provider	Springer Nature Link
Author	Hellman, S. Uddin, M. Tkacik, P. T. Kelly, S. D.
Copyright Year	2016
Abstract	The performance and safety of the rear wing and spoiler employed on the National Association of Stock Car Auto Racing (NASCAR) COT (car of tomorrow) racecar are experimentally studied using 10 % scale models in a water channel. Particle image velocimetry is used to qualitatively examine the differences in flow structures between the two downforce-generating devices under 0 and 180-degree yaw cases. The latter is important due to an issue with the COT flipping into the air when at extreme yaw (i.e. during a crash). At zero yaw, it is observed that smaller length scales of the flow structures in the wake of the wing compared to those in the wake of the spoiler, provide more predictable handling for racecars in close proximity and may allow more safe and competitive racing. At 180-degree yaw, it is observed that wake-structure interactions may not allow proper operation of anti-flipping devices (roof flaps) on the winged car. In the extreme yaw case, local flow scales are examined and show much stronger Reynolds number (Re) dependence for the wing than the spoiler.
Starting Page	281
Ending Page	288
Page Count	8
File Format	PDF
ISSN	12299138
Journal	International Journal of Automotive Technology
Volume Number	17
Issue Number	2
e-ISSN	19763832
Language	English
Publisher	The Korean Society of Automotive Engineers
Publisher Date	2016-04-09
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	NASCAR Wing Spoiler Wake Particle image velocimetry (PIV) Experiment Aerodynamics Water tunnel Automotive Engineering
Content Type	Text
Resource Type	Article
Subject	Automotive Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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