Tehnički vjesnik, Vol. 33 No. 1, 2026.
Izvorni znanstveni članak
https://doi.org/10.17559/TV-20250705002798
Effect of Crosswind on Drag and Lift Variations during Mixed-Vehicle Overtaking Manoeuvres: A CFD Approach
Daniela Delia Alic
; Politehnica University of Timisoara, Faculty of Engineering Hunedoara, Revolutiei Street 2, 331128, Hunedoara, Romania
*
Luisa Izabel Dungan
; Politehnica University of Timisoara, Faculty of Mechanical Engineering, Mihai Viteazu Street 1, 300222 Timisoara, Romania
Milan Rackov
; University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovica 6, 21000 Novi Sad, Serbia
Marian Greconici
; Politehnica University of Timisoara, Dep. Fundamental of Physics for Engineers, Vasile Parvan Street 2, 300223 Timisoara, Romania
Carmen Inge Alic
; Politehnica University of Timisoara, Faculty of Engineering Hunedoara, Revolutiei Street 2, 331128, Hunedoara, Romania
* Dopisni autor.
Sažetak
A CFD-based analysis is carried out in this study to examine time-dependent aerodynamic effects during highway overtaking manoeuvres, with a primary focus on truck-truck interactions under crosswind conditions. Using ANSYS Fluent and unsteady Reynolds-Averaged Navier-Stokes (RANS) simulations, the time-resolved aerodynamic behaviour of a truck being overtaken by an identical vehicle is investigated in detail. A secondary case involving a passenger car overtaking the truck is also examined for comparative purposes. The analysis concentrates on the evolution of the drag and lift coefficients of the overtaken truck throughout the overtaking process. Results indicate that truck-truck interactions produce stronger aerodynamic disturbances, with greater fluctuations in drag and lift compared to the car-truck scenario. These effects are strongly dependent on vehicle spacing and relative positioning. The findings highlight the critical role of transient aerodynamic loading in the design and operation of heavy-duty vehicles, particularly in mixed traffic environments and crosswind-prone areas. This research advances the understanding of real-world aerodynamic interactions, with implications for fuel efficiency, dynamic stability, and highway safety.
Ključne riječi
aerodynamic stability; CFD; crosswind effects; overtaking manoeuvres; transient aerodynamics; truck-truck interaction; wake dynamics
Hrčak ID:
342628
URI
Datum izdavanja:
31.12.2025.
Posjeta: 338 *