TY - GEN
T1 - Numerical Study of a Medium-Speed Train with the Influence of Wall on One Side
AU - Djanali, Vivien S.
AU - Amri, Quraisy
AU - Windharto, Agus
N1 - Publisher Copyright:
© 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2023
Y1 - 2023
N2 - This study was conducted to determine the aerodynamic drag on the surface of the medium-speed train, especially when passing through a wall on one side of the railroad tracks. A steady, three-dimensional numerical study was carried out. The train was designed to operate on a narrow-gauge track. The turbulence model used was the k-ω SST. The type of meshing used was a combination of hexahedral and tetrahedral cells. The simulation was performed at velocities of 120 km/h (33.3 m/s) and 160 km/h (44.4 m/s), which correspond to the Reynolds numbers based on the height of the train of 7.76 × 106 and 10.34 × 106, respectively. There were two variations of the distance of the wall to the center of the railway tracks, i.e., 2.35 m (0.69H) and 6 m (1.76H), with H is the height of train. The results obtained showed that a train with the influence of a wall at a distance of 2.35 m has a higher drag coefficient than that with a wall at a distance of 6 m. The closer the distance of the wall increased the drag experienced by the train. At a wall distance of 2.35 m, there was a difference in the value of the pressure coefficient on the sides of train surface of the train. The resulting pressure coefficient on the surface close to the wall was smaller than the open airside.
AB - This study was conducted to determine the aerodynamic drag on the surface of the medium-speed train, especially when passing through a wall on one side of the railroad tracks. A steady, three-dimensional numerical study was carried out. The train was designed to operate on a narrow-gauge track. The turbulence model used was the k-ω SST. The type of meshing used was a combination of hexahedral and tetrahedral cells. The simulation was performed at velocities of 120 km/h (33.3 m/s) and 160 km/h (44.4 m/s), which correspond to the Reynolds numbers based on the height of the train of 7.76 × 106 and 10.34 × 106, respectively. There were two variations of the distance of the wall to the center of the railway tracks, i.e., 2.35 m (0.69H) and 6 m (1.76H), with H is the height of train. The results obtained showed that a train with the influence of a wall at a distance of 2.35 m has a higher drag coefficient than that with a wall at a distance of 6 m. The closer the distance of the wall increased the drag experienced by the train. At a wall distance of 2.35 m, there was a difference in the value of the pressure coefficient on the sides of train surface of the train. The resulting pressure coefficient on the surface close to the wall was smaller than the open airside.
KW - Aerodynamic
KW - Drag coefficient
KW - Medium-speed train
KW - Pressure coefficient
UR - http://www.scopus.com/inward/record.url?scp=85137084265&partnerID=8YFLogxK
U2 - 10.1007/978-981-19-0867-5_42
DO - 10.1007/978-981-19-0867-5_42
M3 - Conference contribution
AN - SCOPUS:85137084265
SN - 9789811908668
T3 - Lecture Notes in Mechanical Engineering
SP - 350
EP - 359
BT - Recent Advances in Mechanical Engineering - Select Proceedings of ICOME 2021
A2 - Tolj, Ivan
A2 - Reddy, M.V.
A2 - Syaifudin, Achmad
PB - Springer Science and Business Media Deutschland GmbH
T2 - 5th International Conference on Mechanical Engineering, ICOME 2021
Y2 - 25 August 2021 through 26 August 2021
ER -