Numerical simulation for aerodynamic derivatives of bridge deck |
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| Authors: | Lin Huang Haili Liao Bin Wang Yongle Li |
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| Affiliation: | 1. College of Civil Engineering, Ningbo University of Technology, No. 89 Cui Bai Road, HaiShuQu, 315016 Ningbo, Zhejiang, PR China;2. School of Civil Engineering, Southwest Jiaotong University, 610031 Chengdu, Sichuan, PR China;1. School of Civil Engineering, Southeast University, Nanjing 210096, China;2. Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA;1. Department of Civil Engineering, Chittagong University of Engineering and Technology (CUET), Chittagong 4349, Bangladesh;2. Department of Civil Engineering, Yokohama National University, 79-1, Tokiwadai, Hodogaya-ku, 240-8501 Yokohama, Japan;1. COWI Consulting Engineers, Parallelvej 2, 2800 Lyngby, Denmark;2. National Research Council Canada, 1200 Montreal Road, Bldg M2, Ottawa, Ontario, Canada K1A 0R6;1. State Key Lab for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China;2. Department of Infrastructure Engineering, University of Melbourne, VIC 3010, Australia;1. DIEM, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy;2. DICAM, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy |
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| Abstract: | An improved domain decomposition method is proposed to compute aerodynamic derivatives of bridge deck based on commercial Computational Fluid Dynamic (CFD) code FLUENT. In this method, the computational region is discretized into rigid boundary layer mesh region, dynamic mesh region and static mesh region. A simplified formula used to control the body-fitted grid height is deduced from the standard wall function. Aerodynamic derivatives of a flat plate and two long span bridge decks are computed and compared with the theoretical values and the wind tunnel tests results. Numerical results show that several aerodynamic derivatives are influenced by the accessory structures of the bridge deck such as guardrails and inspecting vehicle rails, etc. |
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