A 6 m cube in an atmospheric boundary layer flow -Part 1. Full-scale and wind-tunnel results

  • Hoxey, R.P. (Silsoe Research Institute) ;
  • Richards, P.J. (Silsoe Research Institute) ;
  • Short, J.L. (Silsoe Research Institute)
  • Published : 2002.04.25


Results of measurements of surface pressure and of velocity field made on a full-scale 6 m cube in natural wind are reported. Comparisons are made with results from boundary-layer wind-tunnel studies reported in the literature. Two flow angles are reported; flow normal to a face of the cube (the $0^{\circ}$ case) and flow at $45^{\circ}$. In most comparisons, the spread of wind-tunnel results of pressure measurements spans the full-scale measurements. The exception to this is for the $0^{\circ}$ case where the roof and side-wall pressures at full-scale are more negative, and as a result of this the leeward wall pressures are also lower. The cause of this difference is postulated to be a Reynolds Number scale effect that affects flow reattachment. Measurements of velocity in the vicinity of the cube have been used to define the mean reattachment point on the roof centre line for the $0^{\circ}$ case, and the ground level reattachment point behind the cube for both $0^{\circ}$ and $45^{\circ}$ flow. Comparisons are reported with another full-scale experiment and also with wind-tunnel experiments that indicate a possible dependency on turbulence levels in the approach flow.


  1. Baines, W.D., (1963), "Effects of velocity distribution on wind loads and flow patterns on buildings", Proc. Symp. No. 16 Wind Effects on Buildings and Structures, NPL, UK.
  2. Castro, I.P. and Robins, A.G. (1977), "The flow around a surface-mounted cube in uniform and turbulent streams", J. Fluid Mech. 79 pt 2, 307-335.
  3. Holscher, N. and Niemann, H-J., (1998), "Towards quality assurance for wind tunnel tests: A comparative testing program of the Windtechnologische Gesellschaft", J. Wind. Eng. Ind. Aerod., 74-76, 599-608.
  4. Hunt, A., (1982), "Wind-tunnel measurements of surface pressures on cubic building models at several scales", J. Wind. Eng. Ind. Aerod. 10, 137-163.
  5. Minson, A.J., Wood, C.J. and Belcher, R.E., (1995), "Experimental velocity measurements for CFD validation", J. Wind Eng. Ind. Aerod., 58, 205-215.
  6. Moran, P. and Hoxey, R.P., (1979), "A probe for sensing static pressure in two-dimensional flow", J. Phys. E: Sci. Instrum., 12, 752-753.
  7. Murakami, S. and Mochida, A., (1990), "3-D numerical simulation of airflow around a cubic model by means of the ${\kappa}-{\varepsilon}$ model", J. Wind Eng. Ind. Aerod., 31, 283-303, 1988.
  8. Ogawa, Y., Oikawa, S. and Uehara, K., (1983), "Field and wind tunnel studies of the flow and diffusion around a model cube - 1. Flow measurements", Atmospheric Environment, 17, 6, 1145-1159.
  9. Sakamoto, H. and Arie, M. (1982), "Flow around a cubic body immersed in a turbulent boundary layer", J. Wind Eng. Ind. Aerod. 9, 275-293.
  10. Simiu, E. and Scanlan, R.H. (1996), Wind Effects on Structures, Wiley-Interscience, 1996.
  11. Stathopoulos, T. and Dumitrescu-Brulotte, M. (1989), "Design recommendations for wind loading on buildings of intermediate height", Can. J. Civ. Eng., 16, 910-916.

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