Enhancing aerodynamic performance of high-speed trains under crosswind conditions: Analysis of windproof steps

This research investigates the impact of crosswind conditions on the aerodynamic performance of high-speed trains and explores the effectiveness of windproof steps in mitigating the associated adverse effects. Using advanced numerical simulations based on the lattice Boltzmann method, the study examines the complex flow interactions between windproof steps and trains, considering various windproof device heights and configurations. The results reveal that barrier height plays a crucial role in determining flow patterns and aerodynamic coefficients. The adoption of windproof steps leads to significant reductions in side force coefficients, with the 2 m windproof steps demonstrating superior performance. Moreover, the implementation of windproof steps effectively decreases the lift force coefficient, enhancing the overall stability of the train. Detailed analyses of moment coefficients, including rolling moment and lee-rolling moment, highlight consistent trends influenced by barrier height and type. These findings provide valuable insights for the design and optimization of windproof steps, enabling railway engineers to enhance the aerodynamic performance and safety of high-speed trains operating in crosswind conditions. The research outcomes contribute to the advancement of railway engineering practices, ensuring efficient and sustainable transportation systems.