A novel vortex control method for improving anti-overturning performance of a high-speed train with leeward airbag structures under crosswinds

J Zhang, A Xu, F Huang, Y Bai, T Liu - Physics of Fluids, 2024 - pubs.aip.org
The high-speed train's head and cross sections have been designed in an innovative way to
meet the requirements of aerodynamic drag reduction and crosswind stability of the train …

Improved particle swarm optimization algorithms for aerodynamic shape optimization of high-speed train

Z He, T Liu, H Liu - Advances in engineering software, 2022 - Elsevier
In this paper, improved particle swarm optimization algorithms are presented for improving
the aerodynamic optimization efficiency of a high-speed train head shape. A hybrid particle …

Research Progress of Aerodynamic Multi-Objective Optimization on High-Speed Train Nose Shape.

Z Dai, T Li, W Zhang, J Zhang - CMES-Computer Modeling in …, 2023 - search.ebscohost.com
The aerodynamic optimization design of high-speed trains (HSTs) is crucial for energy
conservation, environmental preservation, operational safety, and speeding up. This study …

Effect of RANS turbulence model on aerodynamic behavior of trains in crosswind

T Li, D Qin, J Zhang - Chinese Journal of Mechanical Engineering, 2019 - Springer
The numerical simulation based on Reynolds time-averaged equation is one of the
approved methods to evaluate the aerodynamic performance of trains in crosswind …

Matching of multiple aerodynamic parameters for railway train/tunnel systems to ensure critical airtightness performance of high-speed trains

J Niu, D Lv, R Li, D Zhou, Y Wang, X Yang - Structural and …, 2023 - Springer
This study attempts to employ a multi-objective optimization algorithm and surrogate model
technology to deal with the reasonable matching of key aerodynamic parameters of railway …

[HTML][HTML] Aerodynamic characteristics of double-connected train groups composed of different kinds of high-speed trains under crosswinds: A comparison study

XS Huo, TH Liu, ZW Chen, WH Li, JQ Niu… - Alexandria Engineering …, 2023 - Elsevier
As train speeds continuously increase, the crosswind stability of high-speed trains (HSTs)
has been a prominent research topic. Benefiting from advances in railway technology, the …

Numerical study for the aerodynamic performance of double unit train under crosswind

Z Guo, T Liu, M Yu, Z Chen, W Li, X Huo… - Journal of Wind …, 2019 - Elsevier
The present work focused on the aerodynamic performance of double unit trains (DUT) and
traditional single unit trains (SUT) under crosswinds. The aerodynamic coefficient as well as …

[HTML][HTML] Review on aerodynamic drag reduction optimization of high-speed trains in China

LI Tian, DAI Zhi-yuan, LIU Jia-li, WU Na… - 交通运输工程 …, 2021 - transport.chd.edu.cn
The progress on aerodynamic drag reduction optimization of high-speed trains in China was
studied. The pressure distribution characteristics of typical components and the contribution …

A stacking-based ensemble prediction method for multiobjective aerodynamic optimization of high-speed train nose shape

Y Li, Z He, H Liu - Advances in Engineering Software, 2024 - Elsevier
A stacking-based ensemble prediction method is proposed in order to improve the efficiency
and accuracy of aerodynamic shape optimization. This can be divided into a two-level …

Multi-objective aerodynamic optimization of high-speed train heads based on the PDE parametric modeling

S Wang, R Wang, Y **a, Z Sun, L You… - Structural and …, 2021 - Springer
With the increasing running speed, the aerodynamic issues of high-speed trains are being
raised and impact the running stability and energy efficiency. The optimization design of the …