Russian Federation
Russian Federation
Purpose: To investigate the formation of air turbulence and aerodynamic forces influencing high-speed trains passing through a tunnel. Methods: Implementation of three-dimensional numerical models in the software complex “Solid Works Flow Simulation” is presented. To solve the tasks, the Frozen Rotor method was used based on the finite element and volume method. Results: The study results on the air mass velocities near the tunnel portal zone using the developed numerical models for the train entering into and exiting the tunnel are presented. The results of field studies and data obtained using computer modelling have been validated. Practical significance: Field studies were carried out on the air mass movement during the train run through the tunnel. The aeroelastic interaction of rolling stock with the tunnel portal structures using numerical models have been investigated. The complexity of turbulent air mass formation in the gap between the train body and the tunnel lining resulting in increased air resistance to train movement in the tunnel and reduced energy efficiency have been shown
Aeroelastic interaction, aerodynamic factors, high-speed rolling stock, experiment, “piston effect”, air mass velocity, turbulent air structure, tunnel structures
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