Large Eddy Simulation of Wind Load Interference Effects on Tandem DoubleHemispherical Domes with Different Spacing

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Large Eddy Simulation of Wind Load Interference Effects on Tandem DoubleHemispherical Domes with Different Spacing

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[1]ZHENG Deqian,YAN Wei,LI Liang,et al.Large Eddy Simulation of Wind Load Interference Effects on Tandem DoubleHemispherical Domes with Different Spacing[J].Journal of Zhengzhou University (Engineering Science),2024,45(06):100-106.[doi:10.13705/j.issn.1671-6833.2024.06.009]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 45 Number of periods: 2024 06 Page number: 100-106 Column: Public date: 2024-09-25

Title:: Large Eddy Simulation of Wind Load Interference Effects on Tandem DoubleHemispherical Domes with Different Spacing

Author(s):: ZHENG Deqian¹; YAN Wei¹; LI Liang¹; ZHAO Lingyu²; MA Wenyong³; 1. School of Civil Engineering, Henan University of Technology, Zhengzhou 450001,China; 2. China Communications Logistics Planning and Design Institute Co. , Ltd. , Shanghai 200231,China; 3. School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043,China

Keywords:: hemispherical domes; wind load; large eddy simulation; interference effect; flow field mechanism

CLC:: TU393. 3TU312. 1

DOI:: 10.13705/j.issn.1671-6833.2024.06.009

Abstract:: Based on the spatially-averaged large eddy simulation method, the wind interference effect of the tandemdouble hemispherical domes was numerically studied considering different center spacing. The effectiveness of thepresent numerical simulation method and parameter settings was firstly verified by comparison between results oflarge eddy simulation and the wind tunnel test on the tandem double hemispherical dome with center spacing of160 m. Then the wind pressure distribution characteristics on the tandem double hemispherical domes surface withthe center spacing of 160 m and 190 m were compared and analyzed to study the influence of the interferenceeffect. In conjunction with the simulated unsteady flow field, the mechanism of the influence on wind loads withdifferent center spacing was investigated. Similar tendency was observed for the distribution of the mean and fluctuating wind pressure coefficients of the tandem double spherical shell roof with different center spacing. The blockingeffect of the upstream roof weakened the positive pressure on the windward surface of the downstream roof. However, the blocking effect of the downstream roof would intensify the flow separation of the upstream roof when thespacing was small, resulting in a significant increase in the local wind suction on the top skylight. As the spacingincreased, the separated vortex on the leeward surface of the upstream roof could change from small-scale strip vortex to large-scale arc-shaped one, leading to more significant wind pressure fluctuations on the roof skylight, upstream leeward surface, and downstream windward surface.

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Last Update: 2024-09-29