| Autor: |
Kirill Ralin Bukreev |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
International Journal of Thermofluids, Vol 18, Iss , Pp 100334- (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2666-2027 |
| DOI: |
10.1016/j.ijft.2023.100334 |
| Popis: |
A numerical and experimental study is conducted investigating the drag reduction performance of teardrop and tubercle trailers compared to a conventional trailer for 1:20 articulated lorry models in no-crosswind conditions. This study implements Computational Fluid Dynamics (CFD), Laser Doppler Anemometry (LDA) and force balance measurements to determine the optimal trailer design for drag reduction at 45–60mph. This study investigates the low-pressure regions on the lorry models through pressure, velocity and turbulence analysis. The velocity magnitude contours and x-velocity profiles showed that the Tubercle and Optimised Camber teardrop trailers had the lowest magnitude of reverse flow and the fastest flow velocity recovery resulting in the smallest wake vortex and recirculation bubble. The turbulent kinetic energy (k) contours and wake turbulent kinetic energy profiles proved that the Tubercle trailer had the lowest k magnitude in the near wake region, whereas the Optimised Camber trailer had the lowest k magnitude in the far wake region. The Optimised Camber trailer achieved a 22.93% reduction in drag coefficient (CD) relative to the Conventional trailer in CFD and 13.85% reduction in CD from force balance measurements. This study concluded the effectiveness of teardrop and tubercle trailers for improved aerodynamic performance for articulated lorries in no-crosswind conditions. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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