TY - JOUR
T1 - Effect of the formation type with different freight vehicles on the train aerodynamic performance
AU - Huo, Xiaoshuai
AU - Liu, Tanghong
AU - Chen, Zhengwei
AU - Li, Wenhui
AU - Gao, Hongrui
N1 - Funding Information:
This work was supported by the National Key R&D Program of China (grant number 2017YFB1201304) and the Fundamental Research Funds for the Central Universities of Central South University (grant number 2021zzts0171).
Publisher Copyright:
© 2021 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2021/9
Y1 - 2021/9
N2 - In this study, the effect of the freight train formation on the train aerodynamic performance was studied. Six cases involving a locomotive (LM) and three different freight vehicles–a boxcar (BC), a tanker (TK), and a double-container freight wagon (DW), were compared and analyzed. The results showed that the aerodynamic drag was significantly affected by the freight train formation type, and the total drag force in Case 2 (LM + BC + DW + TK) was the smallest. Furthermore, the flow field around the train was analyzed to reveal the influence mechanism of the different types of freight train formations on the aerodynamic drag. The car position and the adjacent cars had significant effects on the aerodynamic characteristics of the train. The DW had a greater effect on the pressure and velocity distributions around the train. In addition, the variations of the vortices in the near wake of the same tail car were inconsistent, although there were similar characteristics for the same tail car.
AB - In this study, the effect of the freight train formation on the train aerodynamic performance was studied. Six cases involving a locomotive (LM) and three different freight vehicles–a boxcar (BC), a tanker (TK), and a double-container freight wagon (DW), were compared and analyzed. The results showed that the aerodynamic drag was significantly affected by the freight train formation type, and the total drag force in Case 2 (LM + BC + DW + TK) was the smallest. Furthermore, the flow field around the train was analyzed to reveal the influence mechanism of the different types of freight train formations on the aerodynamic drag. The car position and the adjacent cars had significant effects on the aerodynamic characteristics of the train. The DW had a greater effect on the pressure and velocity distributions around the train. In addition, the variations of the vortices in the near wake of the same tail car were inconsistent, although there were similar characteristics for the same tail car.
KW - aerodynamic drag
KW - computational fluid dynamics (CFD)
KW - flow field
KW - Freight train formation
KW - pressure and slipstream
UR - http://www.scopus.com/inward/record.url?scp=85116305325&partnerID=8YFLogxK
U2 - 10.1080/00423114.2021.1981951
DO - 10.1080/00423114.2021.1981951
M3 - Journal article
AN - SCOPUS:85116305325
SN - 0042-3114
VL - 60
SP - 3868
EP - 3896
JO - Vehicle System Dynamics
JF - Vehicle System Dynamics
IS - 11
ER -