TY - JOUR
T1 - Experimental and numerical research on wind characteristics affected by actual mountain ridges and windbreaks
T2 - a case study of the Lanzhou-Xinjiang high-speed railway
AU - Chen, Zhengwei
AU - Liu, Tanghong
AU - Yu, Miao
AU - Chen, Guang
AU - Chen, Mingyang
AU - Guo, Zijian
N1 - Funding Information:
This work was supported by the National Key R&D Program of China [grant number 2017YFB1201304], the National Science Foundation of China [grant number U1534210], the graduate student independent innovation project in Central South University [grant number 2017zzts197], and the China Scholarship Council [CSC, grant number 201806370043].
Publisher Copyright:
© 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - To reduce the impact of a mountain ridge on the crosswind flow field of a specific section of the Lanzhou-Xinjiang high-speed railway, a portion of the mountain ridge was removed to increase the distance from the windbreak. To verify the effects of this flow optimization measure, the wind speed and wind angle were tested in this mountain ridge region. In this paper, under the actual conditions of this specific case study, the average and transient wind characteristics were analyzed based on the test results. Then, based on the actual terrain model, using the computational fluid dynamics (CFD) method with two inlet boundary conditions, namely, constant wind and exponential wind, the results obtained from the two boundary conditions were validated. Furthermore, the visualized flow structures and wind speed distributions along the railway under both boundary conditions were compared. Finally, along the railway, the impacts of different terrain types on the flow field of the railway were compared.
AB - To reduce the impact of a mountain ridge on the crosswind flow field of a specific section of the Lanzhou-Xinjiang high-speed railway, a portion of the mountain ridge was removed to increase the distance from the windbreak. To verify the effects of this flow optimization measure, the wind speed and wind angle were tested in this mountain ridge region. In this paper, under the actual conditions of this specific case study, the average and transient wind characteristics were analyzed based on the test results. Then, based on the actual terrain model, using the computational fluid dynamics (CFD) method with two inlet boundary conditions, namely, constant wind and exponential wind, the results obtained from the two boundary conditions were validated. Furthermore, the visualized flow structures and wind speed distributions along the railway under both boundary conditions were compared. Finally, along the railway, the impacts of different terrain types on the flow field of the railway were compared.
KW - CFD
KW - crosswind
KW - experiment
KW - Mountain ridges
KW - terrain
KW - windbreak
UR - http://www.scopus.com/inward/record.url?scp=85093834907&partnerID=8YFLogxK
U2 - 10.1080/19942060.2020.1831963
DO - 10.1080/19942060.2020.1831963
M3 - Review article
AN - SCOPUS:85093834907
SN - 1994-2060
VL - 14
SP - 1385
EP - 1403
JO - Engineering Applications of Computational Fluid Mechanics
JF - Engineering Applications of Computational Fluid Mechanics
IS - 1
ER -