Wind and Structures

  • 제24권1호
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  • Pages.25-41
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  • 2017
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Wind pressures on different roof shapes of a finite height circular cylinder

  • Ozmen, Y. (Department of Mechanical Engineering, Karadeniz Technical University) ;
  • Aksu, E. (Naval Architecture and Marine Engineering, Karadeniz Technical University)
  • 투고 : 2016.01.13
  • 심사 : 2016.11.05
  • 발행 : 2017.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

The effects of finite cylinder free end shape on the mean and fluctuating wind pressures were investigated experimentally and numerically by using three different roof shapes: flat, conical and hemispherical. The pressure distributions on the roofs and the side walls of the finite cylinders partially immersed in a simulated atmospheric boundary layer have been obtained for three different roof shapes. Realizable $k-{\varepsilon}$ turbulence model was used for numerical simulations. Change in roof shapes has caused significant differences on the pressure distributions. When compared the pressure distributions on the different roofs, it is seen from the results that hemispherical roof has the most critical pressure field among the others. It is found a good agreement between numerical and experimental results.

키워드

참고문헌

  1. Afgan, I., Moulinec, C., Prosser, R. and Laurence, D. (2007), "Large eddy simulation of turbulent flow for wall-mounted cantilever cylinders of aspect ratio 6 and 10", Int. J. Heat Fluid Fl., 28, 561-574. https://doi.org/10.1016/j.ijheatfluidflow.2007.04.014
  2. Blackmore, P.A., Tsorki, E. and Breeze, G. (2004), "Wind loads on cylindrical roofs", COST Action C14 Impact of Wind and Storm on City Life and Built Environment, von Karman Institute for Fluid Dynamics, D7.1-7.10.
  3. Cheng, C.M. and Fu, C.L. (2010), "Characteristics of wind loads on a hemispherical dome in smooth flow and turbulent boundary layer", J. Wind Eng. Ind. Aerod., 98, 328-344. https://doi.org/10.1016/j.jweia.2009.12.002
  4. Dobriloff, C. and Nitsche, W. (2009), "Surface pressure and wall shear stress measurements on a wall mounted cylinder", Imaging Measurement Method NNFM, 106.
  5. Faghih, A.K. and Bahadori, M.N. (2010), "Three dimensional numerical investigation of air flow over domed roofs", J. Wind Eng. Ind. Aerod., 98, 161-168. https://doi.org/10.1016/j.jweia.2009.10.012
  6. Farivar, D. (1981), "Turbulent uniform flow around cylinders of finite length", AIAA J., 19, 275-281. https://doi.org/10.2514/3.7771
  7. Frohlich, J. and Rodi, W. (2004), "LES of the flow around a circular cylinder of finite height", Int. J. Heat Fluid Fl., 25, 537-548. https://doi.org/10.1016/j.ijheatfluidflow.2004.02.006
  8. Hain, R., Kohler, C.J. and Michaelis, D. (2008), "Tomographic and time resolved PIV measurements on a finite cylinder mounted on a flat plate", Exp. Fluids, 45 (4), 715-724. https://doi.org/10.1007/s00348-008-0553-x
  9. Holman, J.P. (1994), "Experimental methods for engineer", McGraw-Hill Book Company, New York.
  10. Hongo, T. (1995), "Experimental study of wind forces on spherical roofs", Ph.D. Thesis, Tohoku University.
  11. Javadi, K. and Kinai, F. (2014), "On the turbulent flow structures over a short finite cylinders: numerical investigation", Proceedings of the International Conference on Heat Transfer and Fluid Flow, Prauge, August 11-12.
  12. Kareem, A. and Cheng, C.M. (1999), "Pressure and force fluctuations on isolated roughened circular cylinders of finite length in boundary layer flows", J. Fluid. Struct., 13, 907-933. https://doi.org/10.1006/jfls.1999.0247
  13. Kitagawa, T., Fujino, Y., Kimura, K. and Mizuno, Y. (2002), "Wind pressures measurement on end-cell-induced vibration of a cantilevered circular cylinder", J. Wind Eng. Ind. Aerod., 90, 395-405. https://doi.org/10.1016/S0167-6105(01)00200-8
  14. Krajnovic, S. (2011), "Flow around a tall finite cylinder explored by large eddy simulation", J. Fluid Mech., 676, 294-317. https://doi.org/10.1017/S0022112011000450
  15. Leder, A. (2003), "3D-flow structures behind truncated circular cylinders", Proceedings of the FEDSM'03, the 4th ASME/JSME joint fluids engineering conference, Paper No: FEDSM2003-45083, Honolulu Hawaii.
  16. Li, Y.Q., Tamura, Y., Yoshida, A., Katsumura, A. and Cho, K. (2006), "Wind loading and its effects on single-layer reticulated cylindrical shells", J. Wind Eng. Ind. Aerod., 94, 949-973. https://doi.org/10.1016/j.jweia.2006.04.004
  17. Macdonald, P.A., Kwok, K.C.S. and Holmes, J.H. (1988), "Wind loads on circular storage bins, silos and tanks: Point pressure measurements", Research Report No. R529, School of Civil and Mining Engineering University of Sydney, Australia.
  18. Maher, F.J. (1966), "Wind loads on dome-cylinders and dome-cone shapes", J. Struct. Div. - ASCE, 91(3), 79-96.
  19. Mooneghi, M.A., Irwin, P. and Chowdhury, A.G. (2016), "Towards guidelines for design of loose-laid roof pavers for wind uplift", Wind Struct., 22(2), 133-160. https://doi.org/10.12989/was.2016.22.2.133
  20. Okamoto, S. and Sunabashiri, Y. (1992), "Vortex shedding from a circular cylinder of finite length placed on a ground plane", J. Fluid. Eng. - T ASME, 114, 512-521. https://doi.org/10.1115/1.2910062
  21. Park, C.W. and Lee, S.J. (2002), "Flow structure around a finite circular cylinder embedded in various atmospheric boundary layers", Fluid Dynam. Res., 30, 197-215. https://doi.org/10.1016/S0169-5983(02)00037-0
  22. Park, C.W. and Lee, S.J. (2003), "Flow structure around two finite circular cylinders located in boundary layer: side-by-side arrangement", J. Fluid. Struct., 17, 1043-1058. https://doi.org/10.1016/S0889-9746(03)00070-7
  23. Park, C.W. and Lee, S.J. (2004), "Effects of free-end corner shape on flow structure around a finite cylinder", J. Fluid. Struct., 19, 141-158. https://doi.org/10.1016/j.jfluidstructs.2003.12.001
  24. Pattenden, R.J., Turnock, S.R. and Zhang, X. (2005), "Measurements of the flow over a low-aspect-ratio cylinder mounted on a ground plane", Exp. Fluids, 39, 10-21. https://doi.org/10.1007/s00348-005-0949-9
  25. Portela, G. and Godoy, L.A. (2005a), "Wind pressures and buckling of cylindrical steel tanks with a conical roof", Journal of Constructional Steel Research, 61, 786-807. https://doi.org/10.1016/j.jcsr.2004.11.002
  26. Portela, G. and Godoy, L.A. (2005b), "Wind pressures and buckling of cylindrical steel tanks with a dome roof", J. Constr. Steel Res., 61, 808-824. https://doi.org/10.1016/j.jcsr.2004.11.001
  27. Purdy, D.M., Maher, P.E. and Frederick, D. (1967), "Model studies of wind loads on flat-top cylinders", J. Struct. Div. - ASCE, 93, 379-395.
  28. Sabransky, I.J. and Melbourne, W.H. (1987), "Design pressure distribution on circular silos with conical roofs", J. Wind Eng. Ind. Aerod., 26(1), 65-84. https://doi.org/10.1016/0167-6105(87)90036-5
  29. Sumner, D. and Heseltine, J.L. (2008), "Tip vortex structure for a circular cylinder with a free end", J. Wind Eng. Ind. Aerod., 96, 1185-1196. https://doi.org/10.1016/j.jweia.2007.06.039
  30. Tavakol, M.M., Yaghoibu, M. and Masoudi, M.M. (2010), "Air flow aerodynamic on a wall-mounted hemisphere for various turbulent boundary layers", Exp. Therm. Fluid Sci., 34, 538-553. https://doi.org/10.1016/j.expthermflusci.2009.11.007
  31. Taylor, T.J. (1991), "Wind pressures on a hemispherical dome", J. Wind Eng. Ind. Aerod., 40, 199-213.
  32. Uematsu, Y., Moteki, T. and Hongo, T. (2008), "Model of wind pressure field on circular flat roofs and its application to load estimation", J. Wind Eng. Ind. Aerod., 96, 1003-1014. https://doi.org/10.1016/j.jweia.2007.06.025
  33. Uematsu, Y., Watanabe, K., Sasaki, A., Yamada, M. and Hongo, T. (1999), "Wind-induced dynamic response and resultant load estimation of a circular flat roof", J. Wind Eng. Ind. Aerod., 83, 251-261. https://doi.org/10.1016/S0167-6105(99)00076-8
  34. Wang, Y. and Li, Q.S. (2015), "Wind pressure characteristics of a low-rise building with various openings on a roof corner", Wind Struct., 21(1), 1-23. https://doi.org/10.12989/was.2015.21.1.001
  35. West, G.S. and Apelt, C.J. (1982), "The effects of tunnel blockage and aspect ratio on the mean flow past a circular cylinder with Reynolds numbers between $10^4\;and\;10^5$", J. Fluid Mech., 114, 361-377. https://doi.org/10.1017/S0022112082000202

피인용 문헌

  1. Effects of roof slope and wind direction on wind pressure distribution on the roof of a square plan pyramidal low-rise building using CFD simulation vol.11, pp.2, 2017, https://doi.org/10.1007/s40091-019-0227-3