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Effect of Truck-Trailer Gap on Boat-Tail Performance of a Heavy Vehicle: A Numerical Approach

[+] Author Affiliations
Chinara Tashmatova, Mehdi Nazarinia

Heriot-Watt University, Dubai, UAE

Paper No. IMECE2016-66857, pp. V007T09A076; 6 pages
doi:10.1115/IMECE2016-66857
From:
  • ASME 2016 International Mechanical Engineering Congress and Exposition
  • Volume 7: Fluids Engineering
  • Phoenix, Arizona, USA, November 11–17, 2016
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5061-9
  • Copyright © 2016 by ASME

abstract

This paper presents results obtained from a numerical investigation of various configurations of gap clearances for a truck model equipped with boat-tails. ANSYS FLUENT V14.5 was used to examine the flow around the vehicle and to obtain the drag coefficient reductions at a range of yaw angles of 0° to 20°. The vehicle had a streamlined front end and was scaled to 12% of a full size truck with no tractor-trailer gap modeled. The computational domain was calculated at Reynolds number of approximately 8 × 105. The numerical data obtained from the investigation yielded a best configuration of the boat-tail which produced maximum of 10% drag reduction at 0° yaw angle when compared to the baseline model. The optimum boat-tail angles are also determined to be in the range of 15° to 20° for both 0° and 10° yaw angles.

Copyright © 2016 by ASME
Topics: Vehicles , Boats , Trucks

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