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CLC number: TU318.1

On-line Access: 2017-10-06

Received: 2016-10-21

Revision Accepted: 2017-02-21

Crosschecked: 2017-09-07

Cited: 0

Clicked: 2041

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Wei Ding

http://orcid.org/0000-0002-5556-2364

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Journal of Zhejiang University SCIENCE A 2017 Vol.18 No.10 P.793-806

http://doi.org/10.1631/jzus.A1600691


Large eddy simulation of unsteady aerodynamic behavior of long-span vaulted roofs


Author(s):  Wei Ding, Yasushi Uematsu

Affiliation(s):  School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China; more

Corresponding email(s):   emily_dw@163.com

Key Words:  Long-span vaulted roof, Unsteady aerodynamic behavior, Large eddy simulation (LES), Wind tunnel experiment, Forced vibration test


Wei Ding, Yasushi Uematsu. Large eddy simulation of unsteady aerodynamic behavior of long-span vaulted roofs[J]. Journal of Zhejiang University Science A, 2017, 18(10): 793-806.

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author="Wei Ding, Yasushi Uematsu",
journal="Journal of Zhejiang University Science A",
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pages="793-806",
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doi="10.1631/jzus.A1600691"
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%T Large eddy simulation of unsteady aerodynamic behavior of long-span vaulted roofs
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%A Yasushi Uematsu
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DOI - 10.1631/jzus.A1600691


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

目的:探讨作用于大跨度曲面屋盖非定常气动力的特性,为考虑非定常气动力影响的大跨度曲面屋盖抗风设计提供理论参考。
创新点:1. 采用强迫振动试验;2. 采用大涡模拟(LES)流入脉动风的生成方法;3. 研究大跨度曲面屋盖非定常气动力特性。
方法:1. 通过强迫振动风洞试验方法探讨风速、强迫振动振幅、屋盖的矢跨比和缩减频率对非定常气动力的影响;2. 采用计算流体力学数值模拟重现风洞试验,从而在更宽的缩减频率范围内分析非定常气动力的特性,并且通过可视化流场的分析探讨风与屋盖相互作用的机理。
结论:1. 屋盖的振动对屋盖表面的风压分布影响较大。2. 屋盖的振动可能抑制屋盖背风面漩涡的脱落。3. 根据风洞试验和数值模拟的结果分析得到的矢跨比、风速和振动振幅对气动阻尼系数和气动刚度系数的影响较小;气动阻尼系数和气动刚度系数主要随着缩减频率的变化而变化。4. 气动刚度系数为正值,使得结构的总刚度减小,从而减小结构的固有频率;气动阻尼系数为负值,使得结构总阻尼增加。5. 风洞试验和LES模拟结果的一致性可以说明,LES是一个能够有效研究非定常气动力特性的数值模拟方法。

关键词:大涡模拟;大跨度曲面屋盖;非定常气动力;风洞试验;强迫振动试验

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[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.

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