Wind and Structures

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Wind tunnel tests on flow fields of full-scale railway wind barriers

  • Su, Yang (Department of Bridge Engineering, Southwest Jiaotong University) ;
  • Xiang, Huoyue (Department of Bridge Engineering, Southwest Jiaotong University) ;
  • Fang, Chen (Department of Bridge Engineering, Southwest Jiaotong University) ;
  • Wang, Lei (Department of Bridge Engineering, Southwest Jiaotong University) ;
  • Li, Yongle (Department of Bridge Engineering, Southwest Jiaotong University)
  • Received : 2016.06.12
  • Accepted : 2016.12.06
  • Published : 2017.02.25
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Abstract

The present study provides a deeper understanding of the flow fields of a full-scale railway wind barriers by means of a wind tunnel test. First, the drag forces of the three wind barriers were measured using a force sensor, and the drag force coefficients were compared with a similar scale model. On this basis, the mean wind velocity and turbulence upwind and downwind of the wind barriers were measured. The effects of pore size and opening forms of the wind barrier were discussed. The results show that the test of the scaled wind barrier model may be unsafe, and it is suitable to adopt the full-scale wind barrier model. The pore size and the opening forms of wind barriers have a slight influence on the flow fields upwind of the wind barrier but have some influences on the flow fields and power spectra downwind of the wind barrier. The smaller pore size generates a lower turbulence density and value of the power spectrum near the wind barrier, and the porous wind barriers clearly provide better shelter than the bar-type wind barriers.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China, Sichuan Province Youth Science and Technology Innovation Team

References

  1. Bearman, P.W. (1969), "On vortex shedding from a circular cylinder in the critical Reynolds number regime", J. Fluid Mech., 37(3), 577-585. https://doi.org/10.1017/S0022112069000735
  2. Bitog, J.P., Lee, I.B., Shin, M.H., Hong, S.W., Hwang, H.S., Seo, I.H., Yoo, J.I., Kwon, K.S., Kim, Y.H. and Han, J.W. (2009), "Numerical simulation of an array of fences in Saemangeum reclaimed land", Atmos Environ., 43(30), 4612-4621. https://doi.org/10.1016/j.atmosenv.2009.05.050
  3. Bofah, K.K. and Al-Hinai, K.G. (1986), "Field tests of porous fences in the regime of sand-laden wind", J. Wind Eng. Ind. Aerod., 23, 309-319. https://doi.org/10.1016/0167-6105(86)90051-6
  4. Boldes, U., Colman, J. and Di Leo, J.M. (2001), "Field study of the flow behind single and double row herbaceous windbreaks", J. Wind Eng. Ind. Aerod., 89(7), 665-687. https://doi.org/10.1016/S0167-6105(01)00065-4
  5. Chen, N., Li, Y.L., Wang, B., Su, Y. and Xiang, H.Y. (2015), "Effects of wind barrier on the safety of vehicles driven on bridges", J. Wind Eng. Ind. Aerod., 143, 113-127. https://doi.org/10.1016/j.jweia.2015.04.021
  6. Chu, C.R., Chang, C.Y., Huang, C.J., Wu, T.R., Wang, C.Y. and Liu, M.Y. (2013), "Windbreak protection for road vehicles against crosswind", J. Wind Eng. Ind. Aerod., 116, 61-69. https://doi.org/10.1016/j.jweia.2013.02.001
  7. Coleman, S.A. and Baker, C.J. (1992), "The reduction of accident risk for high sided road vehicles in cross winds", J. Wind Eng. Ind. Aerod., 44(1-3), 2685-2695. https://doi.org/10.1016/0167-6105(92)90060-N
  8. Dong, Z.B., Luo, W.Y., Qian, G.Q., Lu, P. and Wang, H.T. (2010), "A wind tunnel simulation of the turbulence fields behind upright porous wind fences", J. Arid Environ., 74(2), 193-207. https://doi.org/10.1016/j.jaridenv.2009.03.015
  9. Dong, Z.B., Luo, W.Y., Qian, G.Q. and Wang, H.T. (2007), "A wind tunnel simulation of the mean velocity fields behind upright porous fences", Agr. Forest Meteorol., 146(1), 82-93. https://doi.org/10.1016/j.agrformet.2007.05.009
  10. Dong, Z.B., Qian, G.Q., Luo, W.Y. and Wang, H.T. (2006), "Threshold velocity for wind erosion: the effects of porous fences", Environ. Geology., 51(3), 471-475. https://doi.org/10.1007/s00254-006-0343-9
  11. Guo, W.W., Wang, Y.J., Xia, H. and Lu, S. (2014), "Wind tunnel test on aerodynamic effect of wind barriers on train-bridge system", Sci. China Tech. Sci., 58(2), 219-225. https://doi.org/10.1007/s11431-014-5675-1
  12. Higuchi, H., Kim, H.J. and Farell, C. (1989), "n flow separation and reattachment around a circular cylinder at critical Reynolds numbers" J. Fluid Mech., 200 149-171. https://doi.org/10.1017/S0022112089000601
  13. Hoxey, R.P., Reynolds, A.M., Richardson, G.M., Robertson, A.P. and Short, J.L. (1998), "bservations of Reynolds number sensitivity in the separated flow region on a bluff body", J. Wind Eng. Ind. Aerod., 73(3), 231-249. https://doi.org/10.1016/S0167-6105(97)00287-0
  14. Iversen, J.D. (1981), "Comparison of wind-tunnel model and full-scale snow fence drifts", J. Wind Eng. Ind. Aerod., 8(3), 231-249. https://doi.org/10.1016/0167-6105(81)90023-4
  15. Kim, H.B. and Lee, S.J. (2001), "Hole diameter effect on flow characteristics of wake behind porous fences having the same porosity", Fluid Dyn. Res., 28, 449-464 https://doi.org/10.1016/S0169-5983(01)00010-7
  16. Kozmar, H., Procino, L., Borsani, A. and Bartoli, G. (2012), "Sheltering efficiency of wind barriers on bridges", J. Wind Eng. Ind. Aerod., 107-108 274-284. https://doi.org/10.1016/j.jweia.2012.04.027
  17. Kwon, S., Kim, D.H., Lee, S.H. and Song, H.S. (2011), "Design criteria of wind barriers for traffic -Part 1: wind barrier performance", Wind Struct., 14(1), 55-70. https://doi.org/10.12989/was.2011.14.1.055
  18. Lee, S. and Kim, H. (1999), "Laboratory measurements of velocity and turbulence field behind porous fences", J. Wind Eng. Ind. Aerod., 80(3), 311-326. https://doi.org/10.1016/S0167-6105(98)00193-7
  19. Miller, D.R., Rosenberg, N.J. and Bagley, W.T. (1975), "Wind reduction by a highly permeable tree shelterbelt", Agricultural Meteorol., 14,321-333.
  20. Raine, J.K. and Stevenson, D.C. (1977), "Wind protection by model fences in a simulated atmospheric boundary layer", J. Wind Eng. Ind. Aerod., 2(2), 159-180. https://doi.org/10.1016/0167-6105(77)90015-0
  21. Richardson, G. (1995), "Full-scale measurements of the effect of a porous windbreak on wind spectra", J. Wind Eng. Ind. Aerod., 54-55, 611-619. https://doi.org/10.1016/0167-6105(94)00076-P
  22. Schwartz, R.C., Fryrear, D.W., Harris, B.L., Bilbro, J.D. and Juo, A. (1995), "Mean flow and shear stress distributions as influenced by vegetative windbreak structure", Agr. Forest Meteorol., 75(1), 1-22. https://doi.org/10.1016/0168-1923(94)02206-Y
  23. Telenta, M., Batista, M., Biancolini, M.E., Prebil, I. and Duhovnik, J. (2015), "Parametric numerical study of wind barrier shelter", Wind Struct., 20(1), 75-93. https://doi.org/10.12989/was.2015.20.1.075
  24. Telenta, M., Duhovnik, J., Kosel, F. and Sajn, V. (2014), "Numerical and experimental study of the flow through a geometrically accurate porous wind barrier model", J. Wind Eng. Ind. Aerod., 124 99-108. https://doi.org/10.1016/j.jweia.2013.11.010
  25. Wang, D.L., Wang, B.J. and Chen, A.R. (2013), "Vehicle-induced aerodynamic loads on highway sound barriers part1: field experiment", Wind Struct., 17(4), 435-449. https://doi.org/10.12989/was.2013.17.4.435
  26. Wu, X.X., Zou, X.Y., Zhang, C.L., Wang, R.D., Zhao, J. and Zhang, J. (2013), "The effect of wind barriers on airflow in a wind tunnel", J. Arid Environ., 97 73-83. https://doi.org/10.1016/j.jaridenv.2013.05.003
  27. Xiang, H.Y. (2013), Protection effect of wind barrier on high speed railway and its wind loads, PhD. Chengdu: Southwest Jiaotong University, (in Chinese).
  28. Xiang, H.Y., Li, Y.L., Chen, B. and Liao, H.L. (2014), "Protection effect of railway wind barrier on running safety of trainu cross winds", Adv. Struct. Eng., 17(8), 1177-1188. https://doi.org/10.1260/1369-4332.17.8.1177
  29. Xiang, H.Y., Li, Y.L. and Wang, B. (2015a), "Aerodynamic interaction between static vehicles and wind barriers on railway bridges exposed to crosswinds", Wind Struct., 20(2), 237-247. https://doi.org/10.12989/was.2015.20.2.237
  30. Xiang, H.Y., Li, Y.L., Wang, B. and Liao, H.L. (2015b), "Numerical simulation of the protective effect of railway wind barriers under crosswinds", Int. J. Rail Transportation., 3(3), 151-163. https://doi.org/10.1080/23248378.2015.1054906
  31. Yeh, C.P,, Tsai, C.H. and Yang, R.J. (2010), "An investigation into the sheltering performance of porous windbreaks under various wind directions", J. Wind Eng. Ind. Aerod., 98(10-11), 520-532. https://doi.org/10.1016/j.jweia.2010.04.002

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