Optimization of airflow organization in subway tunnels under the coupling of piston wind and mechanical ventilation
地铁隧道活塞风与机械通风耦合作用下的气流组织优化

摘要

地铁作为城市重要交通方式，其隧道内气流组织状况关乎运营安全与乘客舒适度。在地铁隧道中，活塞风与机械通风存在耦合作用，该作用对气流组织产生复杂影响。通过构建数学模型并运用数值模拟手段，深入探究不同工况下二者耦合对气流速度、压力分布的影响规律。结果显示，合理调控活塞风井设置与机械通风参数，能够有效优化气流组织，减少气流死区，提升通风效率。此研究为地铁隧道通风系统设计与优化提供科学依据，助力打造更安全、舒适的地铁运营环境。

Abstract

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.