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

Chinara Tashmatova, Mehdi Nazarinia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.
Original languageEnglish
Title of host publicationASME 2016 International Mechanical Engineering Congress and Exposition
Subtitle of host publicationVolume 7: Fluids Engineering
PublisherAmerican Society of Mechanical Engineers
Number of pages6
ISBN (Print)9780791850619
DOIs
Publication statusPublished - 2016

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    Tashmatova, C., & Nazarinia, M. (2016). Effect of Truck-Trailer Gap on Boat-Tail Performance of a Heavy Vehicle: A Numerical Approach. In ASME 2016 International Mechanical Engineering Congress and Exposition: Volume 7: Fluids Engineering [IMECE2016-66857] American Society of Mechanical Engineers. https://doi.org/10.1115/IMECE2016-66857