Volume 19, Issue 3 (March 2019)
Modares Mechanical Engineering 2019, 19(3): 719-730 |
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1- Civil Engineering Department, Engineering Faculty, University of Mohaghegh Ardabili, Ardabil, Iran
2- Civil Engineering Department, Engineering Faculty, University of Mohaghegh Ardabili, Ardabil, Iran , hek@uma.ac.ir
2- Civil Engineering Department, Engineering Faculty, University of Mohaghegh Ardabili, Ardabil, Iran , hek@uma.ac.ir
Abstract: (3395 Views)
The application of computational fluid dynamics is being developed in recent years in order to evaluate the numerical impact of wind damage on high-rise buildings due to the increasing computing power of computers. With regard to the turbulent downturns around flexible, slender and long-winded buildings with relatively high Reynolds numbers, the study of aeroelastic behavior of tall buildings is essential. In this paper, the turbulent wind flow is simulated numerically with four different velocities around the high standard CAARC building. Large Eddy Simulation has been used to solve the turbulence effect in solving fluid flow equations and the response of tall buildings to wind forces is determined by solving the differential equation of motion. A two-way coupling method is used to transfer data between two areas of fluid and structural solution in each step of time. According to the results of the numerical simulation, the pressure coefficients, streamlines and instantaneous pressure field around the tall building are in good agreement with the common characteristics of the flow around the airborne objects. The critical speed corresponding to the lock in phenomenon in this problem is calculated using a Strouhal number equal to 100m/s. Also, the history of displacement of the roof of the building in the direction of the wind and perpendicular to its length have been extracted for different wind velocities and the mean and their standard deviations respectively have been calculated. The continuous increase in the range of the fluctuations of the building under the wind blowing at 100m/s is observed. This point indicates the efficiency and capability of the numerical process in detecting aeroelastic instability with a predicted speed.
Article Type: Original Research |
Subject:
Computational Fluid Dynamic (CFD)
Received: 2018/06/10 | Accepted: 2018/11/12 | Published: 2019/03/1
Received: 2018/06/10 | Accepted: 2018/11/12 | Published: 2019/03/1
References
1. Baker CJ. Wind engineering-Past, present and future. Journal of Wind Engineering and Industrial Aerodynamics. 2007;95(9-11):843-870. [Link] [DOI:10.1016/j.jweia.2007.01.011]
2. Blocken B. 50 years of computational wind engineering: Past, present and future. Journal of Wind Engineering and Industrial Aerodynamics. 2014;129:69-102. [Link] [DOI:10.1016/j.jweia.2014.03.008]
3. Murakami S. Computational wind engineering. Journal of Wind Engineering and Industrial Aerodynamics. 1990;36(Part 1):517-538. [Link] [DOI:10.1016/0167-6105(90)90335-A]
4. Tamura T. Towards practical use of LES in wind engineering. Journal of Wind Engineering and Industrial Aerodynamics. 2008;96(10-11):1451-1471. [Link] [DOI:10.1016/j.jweia.2008.02.034]
5. Huang Sh, Li QS, Xu Sh. Numerical evaluation of wind effects on a tall steel building by CFD. Journal of Constructional Steel Research. 2007;63(5):612-627. [Link] [DOI:10.1016/j.jcsr.2006.06.033]
6. Heidarinejad Gh, Jadidi AM. Turbulent wind flow simulation over Tarbiat Modares University. Modares Mechanical Engineering. 2015;14(13):272-280. [Persian] [Link]
7. Dehghani Mohamadabadi H, Yazdanfar SA, Dehghan A, Dehghani Mohamadabadi A. Numerical analysis of the performance of four-sided wind tower attached to parlor and courtyard in different wind incident angles. Modares Mechanical Engineering. 2017;16(12):125-134. [Persian] [Link]
8. Bazdidi-Tehrani F, Mohammadi-Ahmar A, Kiamansouri M. Analysis of various non-linear k-ε models accuracy to predict flow field and pollutant dispersion around a model building. Modares Mechanical Engineering. 2014;14(6):165-174. [Persian] [Link]
9. Hejazi M, Taghizadeh MA, Afshari E. Numerical simulation of wind interference effects around a group of tall buildings. Journal of Solid and Fluid Mechanics. 2015;5(2):283-298. [Persian] [Link]
10. Huang Sh, Li R, Li QS. Numerical simulation on fluid-structure interaction of wind around super-tall building at high reynolds number conditions. Structural Engineering and Mechanics. 2013;46(2):197-212. [Link] [DOI:10.12989/sem.2013.46.2.197]
11. Menter F. CFD best practice guidelines for CFD code validation for reactor-safety applications [Internet]. Kelowna: ECORA; 2002 [cited 2018 Jun 01]. Available from: https://epdf.tips/cfd-best-practice-guidelines-for-cfd-code-validation-for-reactor-safety-applicat.html [Link]
12. Baetke F, Werner H, Wengle H. Numerical simulation of turbulent flow over surface-mounted obstacles with sharp edges and corners. Journal of Wind Engineering and Industrial Aerodynamics. 1990;35:129-147. [Link] [DOI:10.1016/0167-6105(90)90213-V]
13. Thepmongkorn S, Kwok KCS, Lakshmanan N. A two-degree-of-freedom base hinged aeroelastic (BHA) model for response predictions. Journal of Wind Engineering and Industrial Aerodynamics. 1999;83(1-3):171-181. [Link] [DOI:10.1016/S0167-6105(99)00070-7]
14. Larousse A, Martinuzzi R, Tropea C. Flow around surface-mounted, three-dimensional obstacles. In: Durst F, Friedrich R, Launder BE, Schmidt FW, Schumann U, Whitelaw JH, Editors. Turbulent shear flows 8: Selected papers from the 8th international symposium on turbulent shear flow, 9-11 September, 1991, Munich, Federal Republic of Germany. Heidelberg: Springer; 1991. pp. 127-139. [Link]
15. Melbourne WH. Comparison of measurements on the CAARC standard tall building model in simulated model wind flows. Journal of Wind Engineering and Industrial Aerodynamics. 1980;6(1-2):73-88. [Link] [DOI:10.1016/0167-6105(80)90023-9]
16. Kwok KCS, Melbourne WH. Wind-induced lock-in excitation of tall structures. Journal of the Structural Division. 1981;107(1):57-72. [Link]
17. Saunders JW, Melbourne WH. Tall rectngular building response to cross-wind excitation. In: Eaton KJ, Editor. Proceedings of the fourth international conference on wind effects on buildings and structures. Cambridge: Cambridge University Press; 1977. pp. 369-379. [Link]
18. Braun AL, Awruch AM. Aerodynamic and aeroelastic analyses on the CAARC standard tall building model using numerical simulation. Computers and Structures. 2009;87(9-10):564-581. [Link] [DOI:10.1016/j.compstruc.2009.02.002]
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