Open Access
ARTICLE
Aerodynamic Design of a Subsonic Evacuated Tube Train System
Tian Li1, *, Xiaohan Zhang1, Yao Jiang2, Weihua Zhang1
1 State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu, 610031, China.
2 China Railway Eryuan Engineering Group Co., Ltd., Chengdu, 610031, China.
* Corresponding Author: Tian Li. Email: .
(This article belongs to this Special Issue: Train Aerodynamics)
Fluid Dynamics & Materials Processing 2020, 16(1), 121-130. https://doi.org/10.32604/fdmp.2020.07976
Received 16 July 2019; Accepted 14 August 2019; Issue published 01 February 2020
Abstract
The so-called Evacuated Tube Train (ETT) is currently being proposed as a
high-speed transportation system potentially competitive with airplane transportation.
Aerodynamic resistance is one of the most crucial factors for the successful design of an
ETT. In the present work, a three-dimensional concept ETT model has been elaborated.
The aerodynamic characteristics of the subsonic ETT have been numerically simulated
under different conditions. The train’s running speed varies from 600 km/h up to 1200
km/h, and the blockage ratio is in the range between 0.1 and 0.3. As the blocking ratio
and running speed increase, the resistance of the head car increases greatly, while the
resistance of the middle car changes slightly. The aerodynamic resistance of the tail car is
affected by the shock wave emerging in the wake flow. Two different design criteria for
the maximum allowed aerodynamic resistance are proposed for aerodynamic parameter
matching. With an increase in the blockage ratio and running speed, the atmospheric
pressure in the tube should be decreased to achieve a balance.
Keywords
Cite This Article
Li, T., Zhang, X., Jiang, Y., Zhang, W. (2020). Aerodynamic Design of a Subsonic Evacuated Tube Train System.
FDMP-Fluid Dynamics & Materials Processing, 16(1), 121–130. https://doi.org/10.32604/fdmp.2020.07976
Citations