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May 24, 2026FME TransactionOpen Access

Windbreak and viaduct effects on vehicle aerodynamics: A CFD study

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Authors

ATAmmar TrakićMTMirsad TrobradovićDBDževad Bibić

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Overview

Numerical analysis investigates airflow characteristics in passenger vehicles across viaducts, suggesting effective design can optimize stability.

Key Points

  • The aim is to study how different bridge protection elements affect the aerodynamic characteristics of a passenger vehicle traveling over a viaduct.
  • Conducted CFD simulations using STAR-CCM+ with the RANS approach and k-ω SST turbulence model.
  • Analyzed four geometric configurations: open flow, viaduct with guardrail, solid windbreak, and porous windbreak.
  • Simulated two flow scenarios with and without crosswind and validated results against wind tunnel data from TUM.
  • Solid windbreaks increase side forces and rolling moments on the vehicle.
  • Porous windbreaks significantly reduce turbulent effects and improve aerodynamic stability.
  • A well-designed guardrail achieves comparable effects to complex windbreak structures in optimizing aerodynamic loads.

Cite This Study

Trakić et al. (2026) studied this question.

synapsesocial.com/papers/6a12959d48a0ea1665671bbbhttps://doi.org/10.5937/fme2602338t
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