TY - GEN
T1 - Aerodynamic analysis of trains with different streamlined lengths of heads
AU - Chen, Zhengwei
AU - Liu, Tanghong
AU - Zhou, Xisai
AU - Su, Xinchao
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/10/11
Y1 - 2016/10/11
N2 - Aerodynamic analysis of trains in open air without crosswind was studied using the detached-eddy simulation (DES) method in the present work. Three kinds of train model, with different streamlined lengths of heads but the identical cross section and train length, were investigated. The streamlined lengths are 5m, 9m, and 15m, respectively. To find the influence of streamlined lengths on the aerodynamic properties, the drag coefficient, surface pressure, trackside pressure, slipstream velocity variation along the length of the train and the flow structures around the train, were compared and analyzed. The result of the total drag coefficient decreased 22.4% with the streamlined length increased from 5m to 15m. The longer streamlined length can reduce the strength of vortex shedding and wake flow effectively, and a minor positive pressure area was generated in the nose cone compared to shorter streamlined length.
AB - Aerodynamic analysis of trains in open air without crosswind was studied using the detached-eddy simulation (DES) method in the present work. Three kinds of train model, with different streamlined lengths of heads but the identical cross section and train length, were investigated. The streamlined lengths are 5m, 9m, and 15m, respectively. To find the influence of streamlined lengths on the aerodynamic properties, the drag coefficient, surface pressure, trackside pressure, slipstream velocity variation along the length of the train and the flow structures around the train, were compared and analyzed. The result of the total drag coefficient decreased 22.4% with the streamlined length increased from 5m to 15m. The longer streamlined length can reduce the strength of vortex shedding and wake flow effectively, and a minor positive pressure area was generated in the nose cone compared to shorter streamlined length.
KW - drag coefficient
KW - slipstream
KW - streamlined lengths
KW - trackside pressure
UR - http://www.scopus.com/inward/record.url?scp=84995519547&partnerID=8YFLogxK
U2 - 10.1109/ICIRT.2016.7588758
DO - 10.1109/ICIRT.2016.7588758
M3 - Conference article published in proceeding or book
AN - SCOPUS:84995519547
T3 - 2016 IEEE International Conference on Intelligent Rail Transportation, ICIRT 2016
SP - 382
EP - 387
BT - 2016 IEEE International Conference on Intelligent Rail Transportation, ICIRT 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2016 IEEE International Conference on Intelligent Rail Transportation, ICIRT 2016
Y2 - 23 August 2016 through 25 August 2016
ER -