Wind and Structures

Techno-Press (테크노프레스)
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Aerodynamic and aero-elastic performances of super-large cooling towers

  • Zhao, Lin (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University) ;
  • Chen, Xu (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University) ;
  • Ke, Shitang (Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics) ;
  • Ge, Yaojun (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University)
  • Received : 2013.03.25
  • Accepted : 2014.09.01
  • Published : 2014.10.25
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Abstract

Hyperbolic thin-shell cooling towers have complicated vibration modes, and are very sensitive to the effects of group towers and wind-induced vibrations. Traditional aero-elastic models of cooling towers are usually designed based on the method of stiffness simulation by continuous medium thin shell materials. However, the method has some shortages in actual engineering applications, so the so-called "equivalent beam-net design method" of aero-elastic models of cooling towers is proposed in the paper and an aero-elastic model with a proportion of 1: 200 based on the method above with integrated pressure measurements and vibration measurements has been designed and carried out in TJ-3 wind tunnel of Tongji university. According to the wind tunnel test, this paper discusses the impacts of self-excited force effect on the surface wind pressure of a large-scale cooling tower and the results show that the impact of self-excited force on the distribution characteristics of average surface wind pressure is very small, but the impact on the form of distribution and numerical value of fluctuating wind pressure is relatively large. Combing with the Complete Quadratic Combination method (hereafter referred to as CQC method), the paper further studies the numerical sizes and distribution characteristics of background components, resonant components, cross-term components and total fluctuating wind-induced vibration responses of some typical nodes which indicate that the resonance response is dominant in the fluctuating wind-induced vibration response and cross-term components are not negligible for wind-induced vibration responses of super-large cooling towers.

Keywords

References

  1. Armitt, J. (1980), "Wind loading on cooling towers", J. Struct. Div.-ASCE, 106(3), 623-641.
  2. Babu, G.R., Rajan, S.S., Harikrishna, P., Lakshmanan, N. and Arunachalam, S. (2013), "Experimental determination of wind-induced response on a model of natural draught cooling tower", Exp. Techniques, 37(1), 35-46. https://doi.org/10.1111/j.1747-1567.2011.00715.x
  3. Bamu, P.C. and Zingoni, A. (2005), "Damage, deterioration and the long-term structural performance of cooling-tower shells: a survey of developments over the past 50 years'', Eng. Struct., 27(12), 1794-1800. https://doi.org/10.1016/j.engstruct.2005.04.020
  4. Borri, C., Lupi, F. and Niemann, H.J. (2011), "Non-conventional wind loading on ultra-high towers in solar updraft power plants", Proceedings of the 13th International Conference on Wind Engineering, Netherlands, Amsterdam.
  5. Davenport, A.G. (1967), "Gust loading factors", J. Struct. Div.-ASCE, 93(3), 11-34.
  6. DL/T 5339-2006. (2006), Code for hydraulic design of fossil fuel power plants, Development and Reform Commission, P.R.C.
  7. GB/T 50102-2003. (2003), Code for design of cooling for industrial recirculating water, Ministry of Construction, P.R.C.
  8. Goudarzi, M.A. and Sabbagh-Yazdi and S.R. (2008), "Modeling wind ribs effects for numerical simulation external pressure load on a cooling tower of KAZERUN power plant-IRAN", Wind Struct., 11(6), 479-496. https://doi.org/10.12989/was.2008.11.6.479
  9. Isyumov, N., Abu-Sitta, S.H. and Davenport, A.G. (1972), "Approaches to the design of hyperbolic cooling towers against the dynamic action of wind and earthquakes", Bull. Int. Assoc. Shell Struct., 48, 35-47.
  10. Kasperski, M. and Niemann, H.J. (1992), "The LRC (load-response correlation) method: a general method of estimating unfavorable wind load distributions for linear and nonlinear structural behavior", J. Wind Eng. Ind. Aerod., 43(1-3), 1753-1763. https://doi.org/10.1016/0167-6105(92)90588-2
  11. Ke, S.T., Ge, Y.J., Zhao, L. and Tamura, Y. (2012), "A new methodology for analysis of equivalent static wind loads on supper-large cooling towers", J. Wind Eng. Ind. Aerod., 111, 30-39. https://doi.org/10.1016/j.jweia.2012.08.001
  12. Li, F.H., Ni, Z.H., Shen, S.Z. and Gu, M. (2009), "Theory of POD and its application in wind engineering of structures", J. Vib. Shock, 28(4), 29-32 (in Chinese).
  13. Meroney, R.N. (2008), "Protocol for CFD prediction of cooling-tower drift in an urban environment", J. Wind Eng. Ind. Aerod., 96(10), 1789-1804. https://doi.org/10.1016/j.jweia.2008.02.029
  14. Murali, G., Vardhan, C.M.V. and Reddy, B.V.P (2012), "Response of cooling towers to wind loads", J. Eng. Appl. Sci., 7(1), 114-120.
  15. Niemann, H.J. and Kopper, H.D. (1998), "Influence of adjacent buildings on wind effects on cooling towers", Eng. Struct., 20(10), 874-880. https://doi.org/10.1016/S0141-0296(97)00131-4
  16. Orlando, M. (2001), "Wind-induced interference effects on two adjacent cooling towers", Eng. Struct., 23, 979-992. https://doi.org/10.1016/S0141-0296(00)00110-3
  17. Simiu, E. and Scanlan, R.H. (1996), Wind effects on structures: fundamentals and applications to design, John Wiley & Sons, Inc. Chapter 11: Hyperbolic cooling towers, 404-419, New York.
  18. Tamura, Y. and Suganuma, S. (1999), "Proper orthogonal decomposition of random wind pressure field", J. Fluid. Struct., 13(7-8), 1069-1095. https://doi.org/10.1006/jfls.1999.0242
  19. Xu, Y.Z. and Bai G.L. (2013), "Random buckling bearing capacity of super-large cooling towers considering stochastic material and wind loads", Probabilist. Eng. Mech., 33, 18-25. https://doi.org/10.1016/j.probengmech.2013.01.009
  20. Zahlten, W. and Borri, C. (1998), "Time-domain simulation of the non-linear response of cooling tower shells subjected to stochastic wind loading", Eng. Struct., 20(10), 881-889. https://doi.org/10.1016/S0141-0296(97)00115-6
  21. Zhang, X.T. (2002), "Evaluation and prospect for wind loading codes at home and abroad", J. Tongji University, 30(5), 539-543 (in Chinese).
  22. Zhao, L., Lu, A.P., Zhu, L.D., Cao, S.Y. and Ge, Y.J. (2013), "Radial pressure profile of typhoon field near ground surface observed by distributed meteorologic stations", J. Wind Eng. Ind. Aerod., 122, 105-112. https://doi.org/10.1016/j.jweia.2013.07.009
  23. Zhao, L. and Ge, Y.J. (2010), "Wind loading characteristics of super-large cooling towers", Wind Struct., 13(4), 257-274. https://doi.org/10.12989/was.2010.13.3.257

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