Wind and Structures

  • 제13권3호
  • /
  • Pages.275-292
  • /
  • 2010
  • /
  • 1226-6116(pISSN)
  • /
  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Wind tunnel modeling of flow over mountainous valley terrain

  • Li, C.G. (Research Centre of Wind Engineering, Hunan University) ;
  • Chen, Z.Q. (Research Centre of Wind Engineering, Hunan University) ;
  • Zhang, Z.T. (Research Centre of Wind Engineering, Hunan University) ;
  • Cheung, J.C.K. (School of Mechanical Engineering, University of Adelaide)
  • 투고 : 2009.09.23
  • 심사 : 2009.12.11
  • 발행 : 2010.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

Wind tunnel experiments were conducted to investigate the wind characteristics in the mountainous valley terrain with 4 simplified valley models and a 1:500 scale model of an existing valley terrain in the simulated atmospheric neutral boundary layer model. Measurements were focused on the mean wind flow and longitudinal turbulence intensity. The relationship between hillside slopes and the velocity speed-up effect were studied. By comparing the preliminary results obtained from the simplified valley model tests and the existing terrain model test, some fundamental information was obtained. The measured results indicate that it is inappropriate to describe the mean wind velocity profiles by a power law using the same roughness exponent along the span wise direction in the mountainous valley terrain. The speed-up effect and the significant change in wind direction of the mean flow were observed, which provide the information necessary for determining the design wind speed such as for a long-span bridge across the valley. The longitudinal turbulence intensity near the ground level is reduced due to the speed-up effect of the valley terrain. However, the local topographic features of a more complicated valley terrain may cause significant perturbation to the general wind field characteristics in the valley.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

참고문헌

  1. Cao, S. and Tamura, T. (2006), "Experimental study on roughness effects on turbulent boundary layer flow over a two dimensional steep hill", J. Wind Eng. Ind. Aerod., 94, 1-19. https://doi.org/10.1016/j.jweia.2005.10.001
  2. Carpenter, P. and Locke, N. (1999), "Investigation of wind speeds over multiple two dimensional-hills", J. Wind Eng. Ind. Aerod., 83, 109-120. https://doi.org/10.1016/S0167-6105(99)00065-3
  3. Cheung, J.C.K., Eaddy, M. and Melbourne, W.H. (2003), "Wind tunnel modeling of neutral boundary layer flow over mountains", Proc. $11^{th}$ Int. Conf. on Wind Engineering, Texas, June.
  4. Derickson, R.G. and Peterka, J.A. (2004), Development of a Powerful Hybrid Tool for Evaluating Wind Power in Complex Terrain: Atmospheric Numerical Models and Wind Tunnels, Paper No. AIAA-2004-1005, American Institute of Aeronautics and Astronautics, Inc., 1-15.
  5. Duijm, N.J. (1996), "Dispersion over complex terrain: wind tunnel modeling and analysis techniques", Atmos. Environ., 30, 2839-2852. https://doi.org/10.1016/1352-2310(95)00344-4
  6. Finnigan, J.J. (1988), Air flow over complex terrain, in: W. L. Steffen, O.T. Denmead (Eds.), Flow and Transport in the Natural Environment, Springer, Berlin, 183-229.
  7. Holmes, J.D., Walker, G.R. and Steen, W.E. (1979), The effect of an isolated hill on wind velocities near ground level -- initial measurements, Wind Eng. Rep. 3/79, Dept. of Civil and Systems Engineering, James Cook University of North Queensland, Townsville, Australia, June.
  8. Ishihara, T., Hibi, K. and Oikawa, S. (1999), "A wind tunnel study of turbulence flow over a three-dimensional steep hill", J. Wind Eng. Ind. Aerod., 83, 95-107. https://doi.org/10.1016/S0167-6105(99)00064-1
  9. Irwin, H.P.A.H. (1981), "The design of spires for wind simulation", J. Wind Eng. Ind. Aerod., 7, 361-366. https://doi.org/10.1016/0167-6105(81)90058-1
  10. Jackson, P.S. and Hunt, J.C.R. (1975), "Turbulent wind flow over a low hill", Q. J. Roy. Meteor. Soc., 101, 929-955. https://doi.org/10.1002/qj.49710143015
  11. Kaimal, J.C. (1972), "Spectral characteristics of surface layer Turbulence", Q. J. Roy. Meteor. Soc., 98, 563-589. https://doi.org/10.1002/qj.49709841707
  12. Kim, H.G., Lee, C.M., Lim, H.C. and Kyong, N.H. (1997), "An experimental and numerical study on the flow over two-dimensional hills", J. Wind Eng. Ind. Aerod., 66, 17-33. https://doi.org/10.1016/S0167-6105(97)00007-X
  13. Lemelin, D.R., Surry, D. and Davenport, A.G. (1988), "Simple approximations for wind speed-up over hills", J. Wind Eng. Ind. Aerod., 28, 117-127. https://doi.org/10.1016/0167-6105(88)90108-0
  14. Lubitz, W.D. and White, B.R. (2007), "Wind-tunnel and field investigation of the effect of local wind direction on speed-up over hills", J. Wind Eng. Ind. Aerod., 95, 639-661. https://doi.org/10.1016/j.jweia.2006.09.001
  15. Mason, P.J. and Sykes, R.I. (1979), "Flow over an Isolated Hill of Moderate Slope", Q. J. Roy. Meteor. Soc., 105, 383-395. https://doi.org/10.1002/qj.49710544405
  16. Miller, C.J. and Davenport, A.G. (1998), "Guidelines for the calculation of wind speed-ups", J. Wind Eng. Ind. Aerod., 74-76, 189-197. https://doi.org/10.1016/S0167-6105(98)00016-6
  17. Neff, D.V. and Meroney, R.N. (1998), "Wind-tunnel modeling of hill and vegetation influence on wind power availability", J. Wind Eng. Ind. Aerod., 74-76, 335-343. https://doi.org/10.1016/S0167-6105(98)00030-0
  18. Pearse, J.R., (1982), "Wind flow over conical hills in a simulated atmospheric boundary layer", J. Wind Eng. Ind. Aerod., 10, 303-313. https://doi.org/10.1016/0167-6105(82)90004-6
  19. Taylor, P.A. and Gent, P.R. (1974), "A model of atmospheric boundary-layer flow above an isolated, two dimensional "hill"; an example of flow above gentle topography", Bound.-Lay. Meteorol., 7, 349-362. https://doi.org/10.1007/BF00240837
  20. Taylor, P.A., Walmsley, J.L. and Salmon, J.R. (1983), "A simple model of neutrally stratified boundary-layer flow over real terrain incorporating wavenumber dependent scaling", Bound.-Lay. Meteorol., 26, 169-189. https://doi.org/10.1007/BF00121541
  21. Taylor, P.A. and Lee, R.J. (1984), "Simple Guidelines for estimating wind speed variations due to small scale topographic features", Clim. Bull., 18(2), 3-32.
  22. Taylor, P.A., Mason, P.J. and Bradley, E.F. (1987), "Boundary layer flow over low hills", Bound.-Lay. Meteorol., 39, 107-132. https://doi.org/10.1007/BF00121870
  23. Taylor, P.A. (1998), "Turbulent boundary-layer flow over low and moderate slope hills", J. Wind Eng. Ind. Aerod., 74-76, 25-47. https://doi.org/10.1016/S0167-6105(98)00005-1
  24. Walmsley, J.L., Taylor, P.A. and Keith, T. (1986), "A simple model of neutrally stratified boundary-layer flow over complex terrain with surface roughness modulations", Bound.-Lay. Meteorol., 36, 157-186. https://doi.org/10.1007/BF00117466
  25. Walmsley, J.L., Salmon, J.R. and Taylor, P.A. (1982), "On the application of a model of boundary-layer flow over low hills to real terrain", Bound.-Lay. Meteorol., 23, 17-46. https://doi.org/10.1007/BF00116110
  26. Weng, W.S., Taylor, P.A. and Walmsley, J.L. (2000), "Guidelines for air flow over complex terrain: model developments", J. Wind Eng. Ind. Aerod., 86, 169-186. https://doi.org/10.1016/S0167-6105(00)00009-X
  27. Yamaguchi, A., Ishihara, T. and Fujino, Y. (2003), "Experimental study of the wind flow in a coastal region of Japan", J. Wind Eng. Ind. Aerod., 91, 247-264. https://doi.org/10.1016/S0167-6105(02)00349-5

피인용 문헌

  1. Numerical simulations of the mean wind speeds and turbulence intensities over simplified gorges using the SST k-ω turbulence model vol.10, pp.1, 2016, https://doi.org/10.1080/19942060.2016.1169947
  2. Wind tunnel test and numerical simulation of wind characteristics at a bridge site in mountainous terrain vol.20, pp.8, 2017, https://doi.org/10.1177/1369433216673377
  3. A wind resource assessment around large mountain masses: The speed-up effect vol.13, pp.6, 2016, https://doi.org/10.1080/15435075.2014.993763
  4. The appropriate shape of the boundary transition section for a mountain-gorge terrain model in a wind tunnel test vol.20, pp.1, 2015, https://doi.org/10.12989/was.2015.20.1.015
  5. Wind tunnel tests on the characteristics of wind fields over a simplified gorge vol.20, pp.10, 2017, https://doi.org/10.1177/1369433216680635
  6. A wind energy integration analysis using wind resource assessment as a decision tool for promoting sustainable energy utilization in agriculture vol.96, 2015, https://doi.org/10.1016/j.jclepro.2013.11.030
  7. Investigation of the longitudinal wind power spectra at the gorge terrain vol.20, pp.11, 2017, https://doi.org/10.1177/1369433217693632
  8. Wind characteristics at bridge site in a deep-cutting gorge by wind tunnel test vol.160, 2017, https://doi.org/10.1016/j.jweia.2016.11.002
  9. Numerical Simulation of Wind Fields at the Bridge Site in Mountain-Gorge Terrain Considering an Updated Curved Boundary Transition Section vol.31, pp.3, 2018, https://doi.org/10.1061/(ASCE)AS.1943-5525.0000830
  10. Study on the wind-field characteristics over a bridge site due to the shielding effects of mountains in a deep gorge via numerical simulation vol.22, pp.14, 2019, https://doi.org/10.1177/1369433219857859
  11. Buffeting response of a free-standing bridge pylon in a trumpet-shaped mountain pass vol.30, pp.1, 2010, https://doi.org/10.12989/was.2020.30.1.085
  12. Characteristics of Typhoon “Fung-Wong” Near Earth Pulsation vol.2021, pp.None, 2010, https://doi.org/10.1155/2021/9972981
  13. Research on wind barrier of canyon bridge-tunnel junction based on wind characteristics vol.24, pp.5, 2010, https://doi.org/10.1177/1369433220971730
  14. Wind characteristics and flutter performance of a long-span suspension bridge located in a deep-cutting gorge vol.233, pp.None, 2021, https://doi.org/10.1016/j.engstruct.2020.111841