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Abstract: This paper discusses the unsteady aerodynamic behavior of long-span vaulted roofs. First, a forced vibration test in a turbulent boundary layer is conducted in a wind tunnel. The models are force vibrated in the first anti-symmetric mode to investigate the effects of wind speed, rise/span ratio, and the amplitude and frequency of forced vibration on the distributions of wind pressures and unsteady aerodynamic forces. Then, a large eddy simulation (LES) is carried out to clarify the physical mechanism of wind-roof interaction as well as to investigate the influences of a roof’s vibration on the flow field around the roof. From the results of the wind tunnel experiment and the LES, we discuss the characteristics of unsteady aerodynamic forces on a long-span vaulted roof over a wide range of the reduced frequency of vibration. The effect of unsteady aerodynamic forces on the dynamic response of the roof is also discussed. A comparison between the wind tunnel experiment and the LES indicates that the LES can be used effectively to evaluate the unsteady aerodynamic behavior.

基于大涡模拟方法研究大跨度曲面屋盖非定常气动力的特性

[1]Blackmore, P.A., Tsokri, E., 2006. Wind loads on curved roof. Journal of Wind Engineering and Industrial Aerodynamics, 94(11):833-844.

[2]Chen, F.B., Li, Q.S., Wu, J.R., et al., 2011. Wind effects on a long-span beam string roof structure: wind tunnel test, field measurement and numerical analysis. Journal of Constructional Steel Research, 67(10):1591-1604.

[3]Chen, Z.Q., Wu, Y., Sun, X.Y., 2015. Research on the added mass of open-type one-way tensioned membrane structure in uniform flow. Journal of Wind Engineering and Industrial Aerodynamics, 137:69-77.

[4]Chikamatsu, A., Nozawa, K., Tamura, T., 2002. Large eddy simulation of turbulent flows around a cube in an imitated atmospheric boundary layer. The 17th National Symposium on Wind Engineering (in Japanese).

[5]Daw, D.J., Davenport, A.G., 1989. Aerodynamic damping and stiffness of a semi-circular roof in turbulent wind. Journal of Wind Engineering and Industrial Aerodynamics, 32(1-2):83-92.

[6]Huang, S.H., Li, Q.S., Wu, J.R., 2010. A general inflow turbulence generator for large eddy simulation. Journal of Wind Engineering and Industrial Aerodynamics, 98(10-11):600-617.

[7]Katagiri, J., Ohkuma, T., Marukawa, H., 2001. Motion-induced wind forces acting on rectangular high-rise buildings with side ratio of 2. Journal of Wind Engineering and Industrial Aerodynamics, 89(14-15):1421-1432.

[8]Kataoka, H., Mizuno, M., 1999. Numerical flow computation around 3D square cylinder using inflow turbulence. Journal of Architecture and Planning (Transactions of AIJ), 64(523):71-77 (in Japanese).

[9]Kondo, K., Murakami, S., Mochida, A., 1997. Generation of velocity fluctuations for inflow boundary condition of LES. Journal of Wind Engineering and Industrial Aerodynamics, 67-68:51-64.

[10]Lu, C.L., Li, Q.S., Huang, S.H., et al., 2012. Large eddy simulation of wind effects on a long-span complex roof structure. Journal of Wind Engineering and Industrial Aerodynamics, 100(1):1-18.

[11]Lund, T.S., Wu, X., Squires, K.D., 1998. Generation of turbulent inflow data for spatially-developing boundary layer simulations. Journal of Computational Physics, 140(2):233-258.

[12]Natalini, M.B., Morel, C., Natalini, B., 2013. Mean loads on vaulted canopy roofs. Journal of Wind Engineering and Industrial Aerodynamics, 119:102-113.

[13]Nozawa, K., Tamura, T., 2001. Large eddy simulation of a turbulent boundary layer over a rough ground surface and evaluation of its fluctuating velocity profile. Journal of Structural and Construction Engineering (Transactions of AIJ), 66(541):87-94 (in Japanese).

[14]Nozu, T., Tamura, T., 1998. Generation of unsteady wind data in boundary layers and its turbulence structures. The 15th National Symposium on Wind Engineering (in Japanese).

[15]Ohkuma, T., Marukawa, H., 1990. Mechanism of aeroelastically unstable vibration of large span roof. Wind Engineers, JAWE, 1990(42):35-42 (in Japanese).

[16]Ono, Y., Tamura, T., Kataoka, H., 2008. LES analysis of unsteady characteristics of conical vortex on a flat roof. Journal of Wind Engineering and Industrial Aerodynamics, 96(10-11):2007-2018.

[17]Uematsu, Y., Uchiyama, K., 1982. Wind-induced dynamic behaviour of suspended roofs. The Technology Reports of the Tohoku University, 47:243-261.

[18]Wu, Y., Chen, Z.Q., Sun, X.Y., 2015. Research on the wind-induced aero-elastic response of closed-type saddle-shaped tensioned membrane models. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 16(8):656-668.

[19]Yan, B.W., Li, Q.S., 2015. Inflow turbulence generation methods with large eddy simulation for wind effects on tall buildings. Computers & Fluids, 116:158-175.

[20]Yang, Q.S., Wu, Y., Zhu, W.L., 2010. Experimental study on interaction between membrane structures and wind environment. Earthquake Engineering and Engineering Vibration, 9(4):523-532.