Affiliation(s):
School of Civil Engineering, Central South University, Changsha, 410075, China;
moreAffiliation(s): School of Civil Engineering, Central South University, Changsha, 410075, China; National Engineering Research Center for High-speed Railway Construction, Changsha, 410075, China; Hunan Provincial Key Laboratory for Disaster Prevention and Mitigation of Rail Transit Engineering Structures, Changsha, 410075, China;
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Yan LI, Lei YAN, Xuhui HE. LES study of 3D wind field in a complex mountainous area under different boundary conditions[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2300613
@article{title="LES study of 3D wind field in a complex mountainous area under different boundary conditions", author="Yan LI, Lei YAN, Xuhui HE", journal="Journal of Zhejiang University Science A", year="in press", publisher="Zhejiang University Press & Springer", doi="https://doi.org/10.1631/jzus.A2300613" }
%0 Journal Article %T LES study of 3D wind field in a complex mountainous area under different boundary conditions %A Yan LI %A Lei YAN %A Xuhui HE %J Journal of Zhejiang University SCIENCE A %P %@ 1673-565X %D in press %I Zhejiang University Press & Springer doi="https://doi.org/10.1631/jzus.A2300613"
TY - JOUR T1 - LES study of 3D wind field in a complex mountainous area under different boundary conditions A1 - Yan LI A1 - Lei YAN A1 - Xuhui HE J0 - Journal of Zhejiang University Science A SP - EP - %@ 1673-565X Y1 - in press PB - Zhejiang University Press & Springer ER - doi="https://doi.org/10.1631/jzus.A2300613"
Abstract: Large eddy simulations generally are used to predict three-dimensional wind field characteristics in complex mountainous areas. Certain simulation boundary conditions, such as the height and length of the computational domain or the characteristics of inflow turbulence, can significantly impact the quality of predictions. In this study we examined these boundary conditions within the context of the mountainous terrain on the Sichuan-Xizang line base using a wind tunnel experiment. Various sizes of computational domains and turbulent incoming wind velocities were used in large eddy simulations. The results show that when the height of the computational domain is five times greater than the height of the terrain model, there is minimal influence from the top wall on the wind field characteristics in this complex mountainous area. Expanding the length of the wake region of the computational domain has negligible effects on the wind fields. Turbulence in the inlet boundary reduces the length of the wake region on a leeward hill with a low slope, but has less impact on the mean wind velocity of steep hills.
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