TY - JOUR
T1 - Deterioration of aerodynamic performance of a train driving through noise barriers under crosswinds
AU - Yang, Weichao
AU - Ouyang, Dehui
AU - Deng, E.
AU - Wang, Youwu
AU - Chen, Zhengwei
AU - He, Xuhui
AU - Huang, Yongming
N1 - Funding Information:
This work was funded by the National Natural Science Foundation of China [grant numbers 51978670 and U1934209 ], the National Outstanding Youth Science Fund Project of National Natural Science Foundation of China [grant number 51925808 ], the Research Grants Council, University Grants Committee of the Hong Kong Special Administrative Region (SAR), China [grant number R-5020-18 ], the Innovation and Technology Commission of the Hong Kong SAR Government [grant number K-BBY1 ] and The Hong Kong Polytechnic University's Postdoc Matching Fund Scheme [grant number 1-W21Q ]. The numerical calculations in this paper have been done on Hefei advanced computing center.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/12
Y1 - 2022/12
N2 - Unilateral vertical noise barrier (UVNB), bilateral vertical noise barrier (BVNB) and fully enclosed noise barrier (FENB) are widely used along high-speed railways. The running safety of a high-speed train (HST) faces challenges when entering and exiting a noise barrier in crosswind. A series of computational fluid dynamics numerical simulations of train-noise barrier-crosswind based on the improved delayed detached eddy simulation model and ‘mosaic’ mesh technology are conducted. The influence of different noise barrier types on the aerodynamic load of the carriage is studied. Three buffer structures with different lengths are designed to alleviate the deterioration of aerodynamic performance of HST. Results shows that: The amplitudes of the lift force of the tail car, the lateral force and pitching moment of the head car in the BVNB are the largest, and the amplitude of the yawing moment of the head car in the FENB is the largest. Considering the engineering effects and economic benefits, a buffer structure with a length of six times head car length with a gradual ventilation rate is recommended for project, and the reduction rates of the change rates of the lift and yawing moment are 62.8% and 76.4%, respectively.
AB - Unilateral vertical noise barrier (UVNB), bilateral vertical noise barrier (BVNB) and fully enclosed noise barrier (FENB) are widely used along high-speed railways. The running safety of a high-speed train (HST) faces challenges when entering and exiting a noise barrier in crosswind. A series of computational fluid dynamics numerical simulations of train-noise barrier-crosswind based on the improved delayed detached eddy simulation model and ‘mosaic’ mesh technology are conducted. The influence of different noise barrier types on the aerodynamic load of the carriage is studied. Three buffer structures with different lengths are designed to alleviate the deterioration of aerodynamic performance of HST. Results shows that: The amplitudes of the lift force of the tail car, the lateral force and pitching moment of the head car in the BVNB are the largest, and the amplitude of the yawing moment of the head car in the FENB is the largest. Considering the engineering effects and economic benefits, a buffer structure with a length of six times head car length with a gradual ventilation rate is recommended for project, and the reduction rates of the change rates of the lift and yawing moment are 62.8% and 76.4%, respectively.
KW - Buffer structure
KW - Crosswind
KW - Deterioration of aerodynamic performance
KW - High-speed train (HST)
KW - Improved delayed detached eddy simulation (IDDES)
KW - Noise barrier
UR - http://www.scopus.com/inward/record.url?scp=85142150904&partnerID=8YFLogxK
U2 - 10.1016/j.jweia.2022.105241
DO - 10.1016/j.jweia.2022.105241
M3 - Journal article
AN - SCOPUS:85142150904
SN - 0167-6105
VL - 231
JO - Journal of Wind Engineering and Industrial Aerodynamics
JF - Journal of Wind Engineering and Industrial Aerodynamics
M1 - 105241
ER -