Wind and Structures

Techno-Press (테크노프레스)
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An investigation of the wind statistics and extreme gust events at a rural site

  • Sterling, M. (School of Engineering, The University of Birmingham) ;
  • Baker, C.J. (School of Engineering, The University of Birmingham) ;
  • Richards, P.J. (School of Engineering, University of Auckland) ;
  • Hoxey, R.P. (School of Engineering, The University of Birmingham) ;
  • Quinn, A.D. (School of Engineering, The University of Birmingham)
  • Received : 2005.08.01
  • Accepted : 2006.03.15
  • Published : 2006.06.25
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Abstract

This paper presents an analysis of wind velocity measurements obtained from four ultrasonic anemometers arranged in a vertical formation. The anemometers were located in a rural environment with a view to providing detailed information on the flow statistics of the lower part of the atmospheric boundary layer, particularly for the extreme wind events that are important in loading calculations. The data is analysed using both conventional analysis and conditional sampling. The latter is combined with wavelet analysis in order to provide a detailed analysis of the energy/frequency relationship of the extreme events. The work presented in this paper suggests that on average the extreme events occur as a result of the superposition of two independent mechanisms - large scale events that scale on the atmospheric boundary layer thickness and small scale events a few tens of metres in size.

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References

  1. Adrian, RJ., Meinhart, C.D. and Tomkins, C.D. (2000), 'Vortex organisation in the outer region of the turbulent boundary layer', J. Fluid Mech., 422, 1-54 https://doi.org/10.1017/S0022112000001580
  2. Baker, C.J. (2001), 'Unsteady wind loading on a wall', Wind and Struct., An Int. J., 4(5),413-440 https://doi.org/10.12989/was.2001.4.5.413
  3. Baker, C.J. (2005), 'Wind engineering - past, present and future', Key Note Address. 4th European & African Conference on Wind Engineering, Prague. 11-15 July
  4. ESDU (1985), 'Characteristics of atmospheric turbulence near the ground: Part 2 single point data for strong wind - neutral atmosphere', data Item 85020, Engineering Sciences Data Unit, London
  5. Fiedler, H.E. (1988), 'Coherent structures in turbulent flows', Progress in Aerospace Sciences, 25, 3, 231-269 https://doi.org/10.1016/0376-0421(88)90001-2
  6. Garde, R.J. (1994), Turbulent Flow, Wiley Eastern, New Delhi
  7. Gurley, K. and Kareem, A. (1999), 'Application of wavelet transforms in earthquake, wind and ocean engineering', Eng. Struct., 21, 149-167 https://doi.org/10.1016/S0141-0296(97)00139-9
  8. Jeong, J. and Hussain, A.K.M.F. (1995), 'On the identification of a vortex', J. Fluid Mech., 285, 69-94 https://doi.org/10.1017/S0022112095000462
  9. Kaimal, J.C. and Finnigan, J.J. (1994), Atmospheric Boundary Layer Flows, Oxford University Press, U.K
  10. Richards, P.J., Fong, S. and Hoxey, R.P. (1997), 'Anisotropic turbulence in the atmospheric surface layer', J. Wind Eng. Ind. Aerodyn., 69-71, 903-913
  11. Richards, P.J., Baker, C.J. and Hoxey, R.P. (2003), 'Turbulent event sequencing in the atmospheric surface layer', 11th International Conference on Wind Engineering, Lubbock, Texas, 2-5 June 2003, 2101-2108
  12. Richards, P.J., Hoxey, R.P., Connell, B.D. and Lander, D.P. (2005), 'Wind tunnel modelling of the Silsoe Cube', The fourth European & African Conference on Wind Engineering, July 11-15, Prague
  13. Robertson, A., Hoxey, R.P., Quinn, A.D., Hobson, N. and Burgess, L. (2001), 'The atmospheric flow laboratory ay silsoe research institute: A new facility for wind engineering', 3rd European & African Conference on Wind Engineering, Eindhoven University of Technology, 2-6 July 2001
  14. Sterling, M., Baker, C.J. and Hoxey, R.P. (2003), 'Short tenn unsteady wind loading on a low-rise building', Wind and Struct., An Int. J., 6(5), 403-418 https://doi.org/10.12989/was.2003.6.5.403
  15. Sterling, M., Baker, C.J., Quinn, A.D. and Hoxey, R.P. (2005), 'Pressure and velocity fluctuations in the atmospheric boundary layer', Wind and Struct., An Int. J., 8(1), 13-34 https://doi.org/10.12989/was.2005.8.1.013
  16. Stull, R.B. (1988), An Introduction to Boundary Layer Meteorology, Kluwer Academic Publishers, 684 pages
  17. Torrence, C. and Compo, G.P. (1998), 'A practical guide to wavelet analysis', Bulletin of American Meteorological Society, 79(1), 61-78 https://doi.org/10.1175/1520-0477(1998)079<0061:APGTWA>2.0.CO;2

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