Effect of dynamic flexible biomimetic fishtail on the wake characteristics and aerodynamic drag of high-speed trains

Key Points

• Aerodynamic drag is significantly altered by the biomimetic fishtail design, enhancing overall efficiency.
• The study demonstrates a decrease in drag by 15% when tested at speeds above 300 km/h.
• Observational analysis of wake characteristics was conducted in a controlled wind tunnel environment.
• These findings may enable design improvements for high-speed trains, leading to reduced energy consumption.