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A comparative investigation of the TTU pressure envelope -Numerical versus laboratory and full scale results

  • Bekele, S.A. (The Boundary Layer Wind Tunnel Laboratory, University of Western Ontario) ;
  • Hangan, H. (The Boundary Layer Wind Tunnel Laboratory, University of Western Ontario)
  • 발행 : 2002.04.25

초록

Wind tunnel pressure measurements and numerical simulations based on the Reynolds Stress Model (RSM) are compared with full and model scale data in the flow area of impingement, separation and wake for $60^{\circ}$ and $90^{\circ}$ wind azimuth angles. The phase averaged fluctuating pressures simulated by the RSM model are combined with modelling of the small scale, random pressure field to produce the total, instantaneous pressures. Time averaged, rsm and peak pressure coefficients are consequently calculated. This numerical approach predicts slightly better the pressure field on the roof of the TTU (Texas Tech University) building when compared to the wind tunnel experimental results. However, it shows a deviation from both experimental data sets in the impingement and wake regions. The limitations of the RSM model in resolving the intermittent flow field associated with the corner vortex formation are discussed. Also, correlations between the largest roof suctions and the corner vortex "switching phenomena" are observed. It is inferred that the intermittency and short duration of this vortex switching might be related to both the wind tunnel and numerical simulation under-prediction of the peak roof suctions for oblique wind directions.

키워드

참고문헌

  1. Baetke, F. and Werner, H. (1990), "Numerical simulation of turbulent flow over surface-mounted obstacles with sharp edges and corners", J. Wind Eng. Ind. Aerod., 35, 129-147. https://doi.org/10.1016/0167-6105(90)90213-V
  2. Banks, D., Meroney, R.N, Sarkar, P.P., Zhao, Z. and Wu, F. (2000), "Flow visualization of conical vortices on flat roofs with simultaneous surface pressure measurement", J. Wind Eng. Ind. Aerod., 84, 65-85. https://doi.org/10.1016/S0167-6105(99)00044-6
  3. Cochran, L.S. and Cermak, J.E. (1992), "Full- and model-scale cladding pressures on the Texas Tech University experimental building", J. Wind Eng. Ind. Aerod., 41-44, 1589-1600.
  4. Fluent Inc. (1998), "GAMBIT modeling guide".
  5. Fluent Inc. (1998), "Fluent user's guide".
  6. Franke, R. and Rodi, W. (1993), "Calculation of vortex shedding past a square cylinder with various turbulence models", In Turbulent Shere Flows 8, F. Durst, et al. Editors, Springer, New York, 189-204.
  7. Ham, H.J. and Bienkiewicz, B. (1998), "Wind tunnel simulation of TTU flow and building roof pressure", J. Wind Eng. Ind. Aerod., 77 & 78, 119-133.
  8. He, J. and Song, C.C.S. (1997), "A numerical study of wind flow around the TTU building and the roof corner vortex", J. Wind Eng. Ind. Aerod., 67 & 68, 547-558.
  9. Hussain, A.K.M.F. and Reynolds, W.C. (1970), "The mechanics of an organized wave in turbulent shear flow", J. Fluid Mech., 41, 241-258. https://doi.org/10.1017/S0022112070000605
  10. Kawai, H. and Nishimura, G. (1996), "Characteristics of fluctuating suction and conical vortices on a flat roof in oblique flow", J. Wind Eng. Ind. Aerod., 60, 211-225. https://doi.org/10.1016/0167-6105(96)00035-9
  11. Lakehal, D. and Rodi, W. (1997), "Calculation of the flow past a surface-mounted cube with two-layer turbulence models", J. Wind Eng. Ind. Aerod., 67 & 68, 65-78.
  12. Levitan, M.L., Mehta, K.C. and Vann, W.P. (1991), "Field measurements of pressures on the Texas Tech Building", J. Wind Eng. Ind. Aerod., 38, 227-234. https://doi.org/10.1016/0167-6105(91)90043-V
  13. Levitan, M.L. and Mehta, K.C. (1992), "Texas Tech field experiments for wind loads part I: building and pressure measuring system", J. Wind Eng. Ind. Aerod., 41-44, 1565-1576.
  14. Mochida, A., Murkami S., Shoji, M. and Ishida, Y. (1993), "Numerical simulation of flow field around Texas Tech Building by large eddy simulation", J. Wind Eng. Ind. Aerod., 46 & 47, 455-460.
  15. Murakami, S. (1993), "Comparison of various turbulence models applied to a bluff body", J. Wind Eng. Ind. Aerod., 46 & 47, 21-36.
  16. Paterson, D.A. and Holmes, J.D. (1989), "Computation of wind flow around the Texas Tech Building", Proc., Workshop on Industrial Fluid Dynamics, Heat Transfer and Wind Engineering, CSIRO-DBCE, Highett, Victoria, Australia, 33-34.
  17. Rodi, W. (1993), "On the simulation of turbulent flow past bluff bodies", J. Wind Eng. Ind. Aerod., 46 & 47, 3-19.
  18. Sarkar, P.P., Zhao, Z. and Mehta, K.C. (1997), "Flow visualization and measurement on the roof of the Texas Tech Building", J. Wind Eng. Ind. Aerod., 69 & 71, 597-606.
  19. Selvam, P.R. (1992), "Computation of pressures on Texas Tech Building", J. Wind Eng. Ind. Aerod., 41-44, 1619-1627.
  20. Selvam, P.R. (1997), "Computation of pressures on Texas Tech University building using large eddy simulation", J. Wind Eng. Ind. Aerod., 67& 68, 647-657.
  21. Shah, K.B. and Ferziger, J.H. (1997), "A fluid mechanicians view of wind engineering large eddy simulation of flow past a cubic obstacle", J. Wind Eng. Ind. Aerod., 67 & 68, 211-224.
  22. Surry, D. (1991), "Pressure measurements on the Texas Tech Building: Wind tunnel measurements and comparisons with full scale", J. Wind Eng. Ind. Aerod., 38, 235-247. https://doi.org/10.1016/0167-6105(91)90044-W
  23. Taniike, Y. and Taniguchi, T. (1999), "Switching phenomena of conical vortices on varies flat roofs", Con. on Wind Engineering Copenhagen / Denmark, 1203-1208.
  24. Thomas, T. G. and Williams, J.J.R. (1999), "Simulation of skewed turbulent flow past a surface mounted cube", J. Wind Eng. Ind. Aerod., 81, 347-360. https://doi.org/10.1016/S0167-6105(99)00029-X
  25. Tieleman, H.W., Surry, D. and Metha, K.C. (1996), "Full/model-scale comparison of surface pressures on the Texas Tech experimental building", J. Wind Eng. Ind. Aerod., 61, 1-23. https://doi.org/10.1016/0167-6105(96)00042-6
  26. Yu, D. and Kareem, A. (1997), "Numerical simulation of flow around rectangular prism", J. Wind Eng. Ind. Aerod., 67 & 68, 195-208.
  27. Wright, N.G. and Easom, G.J. (1999), "Comparison of several computational turbulence models with full-scale measurements of flow around a building", Wind and Structures, An Int. J., 2(4), 305-323. https://doi.org/10.12989/was.1999.2.4.305
  28. Wu, F., Sarkar, P.P. and Mehta, K.C. (1999), "Understanding the conical-vortex flow on roofs", Con. on Wind Engineering Copenhagen / Denmark, 1867-1874.

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