Large eddy simulation for wind induced responses of Nanning Wuxiang ASEAN Tower

作者：Yu, Yuanlin; Yang, Yi; Liu, Fujun; Shi, Biqing; Xie, Zhuangning

来源：Journal of Vibration and Shock, 2018, 37(21): 78-86.

DOI：10.13465/j.cnki.jvs.2018.21.012

• Displacement response
• High-rise building structure
• Numerical wind tunnels
• Turbulent inflow generator
• Vortex shedding frequency
• Wind induced vibrations
• Wind tunnel tests
• Wind-induced response

Here, 528 m high Nanning Wuxiang ASEAN Tower was taken as an engineering example, a new turbulent inflow generator named the narrowband synthetic random flow generator (NSRFG) was used to do the large eddy simulation (LES) for its wind-induced vibration response. Its base loads and displacement responses were calculated. The numerical wind tunnel's simulation results were compared with those of the HFFB wind tunnel tests, and the effectiveness and correctness of NSRFG were verified. The results showed that the base bending moment power spectra simulation results in downwind and crosswind directions agree well with those of the wind tunnel tests, but the simulation results in torsional direction have a certain gap compared with the wind tunnel test ones;for the tower's wind-induced vibration responses, the numerical simulation results in downwind direction agree well with the wind tunnel test ones, but the simulation results in crosswind and torsional directions are a little smaller;in across-wind direction, the predicted value for the vortex shedding frequency of the tower model with NSRFG was close to the wind tunnel test one. The study results provided a valuable reference for structural design.

• 出版日期2018-11-15
• 单位华南理工大学