Research on Aerodynamic Characteristic for EMU Passing by Windbreak Wall Gap under Crosswind
- DOI
- 10.2991/ifmca-16.2017.3How to use a DOI?
- Keywords
- Numerical simulation, Dynamic grid technology, Windbreak wall gap, Aerodynamic characteristics
- Abstract
When the EMU(Electric Multiple Units) is passing by the windbreak wall gap, the crosswind strikes at its surface, causing the aerodynamic performance exceeds the standards and making influence on the train safety and the passenger comfort. Therefore, the study of this problem is particularly important. Based on the basic control equations of three dimensional, incompressible, unsteady, viscous flow, standard equation as well as dynamic grid technology, this paper studies the aerodynamic characteristics of the EMU passing by the windbreak wall gap with the speed of 200km/h under 25m/s crosswind, obtains the change law of the cross force coefficient and the overturning moment coefficient of the train. The results shows that the values are almost stable before the train passing by the windbreak wall gap. But when the train is passing by the gap, the values reach the maximum and then reduce rapidly to the minimum. After passing by the gap, the values return to steady again. Among them, the cross force coefficient and the overturning moment coefficient of the head car are the maximum, and the values are 0.1488 and 0.0718 respectively. So the safety of the head car is the worst.
- Copyright
- © 2017, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Dongping Wang AU - Dongdong Chen AU - Ming Li AU - Gaofeng Liu PY - 2017/03 DA - 2017/03 TI - Research on Aerodynamic Characteristic for EMU Passing by Windbreak Wall Gap under Crosswind BT - Proceedings of the 2016 International Forum on Mechanical, Control and Automation (IFMCA 2016) PB - Atlantis Press SP - 19 EP - 26 SN - 2352-5401 UR - https://doi.org/10.2991/ifmca-16.2017.3 DO - 10.2991/ifmca-16.2017.3 ID - Wang2017/03 ER -