International Journal of Mechanical Engineering

As a vital mode of urban transportation, the airflow organization within subway tunnels is crucial for operational safety and passenger comfort. In subway tunnels, the coupling effect between piston wind and mechanical ventilation has a complex impact on airflow organization. By constructing mathematical models and employing numerical simulation techniques, this study explores the influence of the coupling effect on airflow velocity and pressure distribution under various operating conditions. The results show that by reasonably adjusting the settings of piston wind wells and the parameters of mechanical ventilation, the airflow organization can be effectively optimized, dead zones reduced, and ventilation efficiency improved. This research provides a scientific basis for the design and optimization of subway tunnel ventilation systems, contributing to the creation of a safer and more comfortable subway operating environment.

Subway tunnel; Piston wind; Mechanical ventilation; Coupling effect; Airflow organization optimization