\n High-speed railway aerodynamics is the key basic science for solving the bottleneck problem of high-speed railway development. This paper systematically summarizes the aerodynamic research relating to China’s high-speed railway network. Seven key research advances are comprehensively discussed, including train aerodynamic drag-reduction technology, train aerodynamic noise-reduction technology, train ventilation technology, train crossing aerodynamics, train/tunnel aerodynamics, train/climate environment aerodynamics, and train/human body aerodynamics. Seven types of railway aerodynamic test platform built by Central South University are introduced. Five major systems for a high-speed railway network—the aerodynamics theoretical system, the aerodynamic shape (train, tunnel, and so on) design system, the aerodynamics evaluation system, the 3D protection system for operational safety of the high-speed railway network, and the high-speed railway aerodynamic test/computation/analysis platform system—are also introduced. Finally, eight future development directions for the field of railway aerodynamics are proposed. For over 30 years, railway aerodynamics has been an important supporting element in the development of China’s high-speed railway network, which has also promoted the development of high-speed railway aerodynamics throughout the world.

Review of research on high-speed railway aerodynamics in China

The coupling and complexity of railway train / tunnel system are further aggravated by increasing train speed, which produces a series of aerodynamics problems, such as aerodynamic drag, slipstream, pressure wave and micro pressure wave. Aerodynamic effects of tunnels will result in a significant increase in train energy consumption, shorten life of railway train / tunnel system, and increase maintenance cost. This paper provides a review of aerodynamics of railway train / tunnel system. Challenges in railway train / tunnel system aerodynamics and their related factors are discussed firstly. Aerodynamic performance and flow field characteristics of trains in tunnels are presented. Relationship of aerodynamic effects and parameters of railway train / tunnel system, and the control methods for reducing aerodynamic effects in tunnels are explained. A traffic safety evaluation of the train in tunnels, such as vehicle body structure, passengers’ ear comfort, etc., is introduced and analysed. Finally, future outlooks and research topics are proposed.

Aerodynamics of railway train/tunnel system: A review of recent research

Numerical study on the impact of Mach number on the coupling effect of aerodynamic heating and aerodynamic pressure caused by a tube train

The influence of reduced cross-section on pressure transients from high-speed trains intersecting in a tunnel

Moving model tests on transient pressure and micro-pressure wave distribution induced by train passing through tunnel

Mechanism and capability of ventilation openings for alleviating micro-pressure waves emitted from high-speed railway tunnels

Gas flows and losses inside high-speed ventilated supercavitating flows

Control of the ventilated supercavity on the maneuvering trajectory

Three-Dimensional Ventilated Supercavity on a Maneuvering Trajectory

Optimization of the maximum range of supercavitating vehicles based on a genetic algorithm

Wang Zou

Papers

Mechanism and capability of ventilation openings for alleviating micro-pressure waves emitted from high-speed railway tunnels

Gas flows and losses inside high-speed ventilated supercavitating flows

Control of the ventilated supercavity on the maneuvering trajectory

Three-Dimensional Ventilated Supercavity on a Maneuvering Trajectory

Optimization of the maximum range of supercavitating vehicles based on a genetic algorithm