Browse > Article
http://dx.doi.org/10.12989/was.2016.23.5.465

Pressure distribution on rectangular buildings with changes in aspect ratio and wind direction  

Lee, Young Tae (School of Mechanical Engineering, Pusan National University)
Boo, Soo Ii (School of Mechanical Engineering, Pusan National University)
Lim, Hee Chang (School of Mechanical Engineering, Pusan National University)
Misutani, Kunio (Department of Architecture, Tokyo Polytechnic University)
Publication Information
Wind and Structures / v.23, no.5, 2016 , pp. 465-483 More about this Journal
Abstract
This study aims to enhance the understanding of the surface pressure distribution around rectangular bodies, by considering aspects such as the suction pressure at the leading edge on the top and side faces when the body aspect ratio and wind direction are changed. We carried out wind tunnel measurements and numerical simulations of flow around a series of rectangular bodies (a cube and two rectangular bodies) that were placed in a deep turbulent boundary layer. Based on a modern numerical platform, the Navier-Stokes equations with the typical two-equation model (i.e., the standard $k-{\varepsilon}$ model) were solved, and the results were compared with the wind tunnel measurement data. Regarding the turbulence model, the results of the $k-{\varepsilon}$ model are in overall agreement with the experimental results, including the existing data. However, because of the blockage effects in the computational domain, the pressure recovery region is underpredicted compared to the experimental data. In addition, the $k-{\varepsilon}$ model sometimes will fail to capture the exact flow features. The primary emphasis in this study is on the flow characteristics around rectangular bodies with various aspect ratios and approaching wind directions. The aspect ratio and wind direction influence the type of wake that is generated and ultimately the structural loading and pressure, and in particular, the structural excitation. The results show that the surface pressure variation is highly dependent upon the approaching wind direction, especially on the top and side faces of the cube. In addition, the transverse width has a substantial effect on the variations in surface pressure around the bodies, while the longitudinal length has less influence compared to the transverse width.
Keywords
rectangular bodies; wind direction; aspect ratio; surface pressure distribution; wind-tunnel measurement; $k-{\varepsilon}$ model; Computational Fluid Dynamics;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Schofield, W. and Logan, E. (1990), "Turbulent shear flow over surface-mounted obstacles", J. Fluid Eng. - ASME, 112(4), 376-385.   DOI
2 Shur, M. L., Spalart, P.R., Strelets, M.K. and Travin, A.K. (2008), "A hybrid RANS-LES approach with delayed-DES and wall-modelled LES capabilities", J. Heat Fluid Fl., 29(6), 1638-1649.   DOI
3 Simiu, E. and Scanlan, R.H. (1996), Wind effects on Structures-Fundamentals and Applications to Design, (3rd Ed.). Wiley, New York, USA.
4 Tieleman, H.W. and Akins, R.E. (1996), "The effect of incident turbulence on the surface pressures of surface-mounted prisms", J Fluid. Struct., 10(4), 367-393.   DOI
5 Tominaga, Y. and Stathopoulos, T. (2009), "Numerical simulation of dispersion around an isolated cubic building: comparison of various types of k-$\varepsilon$ models", Atmos. Environ., 43(20), 3200-3210.   DOI
6 Xie, Z.T. and Castro, I.P. (2008), "Efficient generation of inflow conditions for large-eddy simulations of street-scale flows", Flow Turbul. Combus., 81(3), 449-470.   DOI
7 Castro, I.P. and Robins, A.G. (1977), "The flow around a surface mounted cube in uniform and turbulent streams", J. Fluid Mech., 79(2), 307-335.   DOI
8 Cook, N.J. (1978), "Wind tunnel simulation of the adiabatic atmospheric boundary layer by roughness, barrier and mixing device methods", J. Wind Eng. Ind. Aerod., 3(2-3), 157-176.   DOI
9 ESDU (1985), "Characteristics of atmospheric turbulence near the ground. part ii: single point data for strong winds (neutral atmosphere)", In Engineering Sciences Data Unit.
10 Hunt, J.C.R. and Fernholz, H. (1975), "Wind-tunnel simulation of the atmospheric boundary layer: a report on Euromech 50", J Fluid Mech., 70(3), 543-559.   DOI
11 Jochen, F. and Dominic, V.T. (2008), "Hybrid LES/RANS methods for the simulation of turbulent flows", Prog. Aerosp. Sci., 44(5), 349-377.   DOI
12 Lim, H.C. (2007), "Generation of a turbulent boundary layer using LES", Trans of the KSME (B), 31(8), 680-687.
13 Lim, H.C. (2009), "Wind flow around rectangular obstacles with aspect ratio", Wind Struct., 12(4), 299-312.   DOI
14 Lim, H.C., Castro, I.P. and Hoxey, R.P. (2007), "Bluff bodies in deep turbulent boundary layers:Reynolds-number issues", J. Fluid Mech., 571, 97-118.   DOI
15 Lim, H.C., Thomas, T.G. and Castro, I.P. (2009), "Flow around a cube in a turbulent boundary layer: LES and experiment", J. Wind Eng. Ind. Aerod., 97(2), 96-109.   DOI
16 Lund, T.S., Xiaohua, W. and Squires, K.D. (1998), "Generation of turbulent inflow data for Spatially-Developing boundary layer simulations", J. Comput. Phys., 140(2), 233-258.   DOI
17 Martinuzzi, R. and Tropea, C. (1993), "The flow around surface-mounted, prismatic obstacles placed in a fully developed channel flow", J. Fluid Eng. - ASME, 115(1), 85-92.   DOI
18 Murakami, S. and Mochida, A. (1988), "3D numerical simulation of airflow around a cubic model by means of k-E model", J. Wind Eng. Ind. Aerod., 31(2-3), 283-303.   DOI
19 Meroney, R.N., Leitl, B.M., Rafailidis, S. and Schatzmann, M. (1999), "Wind tunnel and numerical modeling of flow and dispersion about several building shapes", J. Wind Eng. Ind. Aerod., 81(1-3), 333-345.   DOI
20 Murakami, S. (1993), "Comparison of various turbulence models applied to a bluff body", J. Wind Eng. Ind. Aerod., 46-47, 21-36.   DOI
21 Nozawa, K. and Tamura, T. (2002), "Large eddy simulation of the flow around a low-rise building immersed in a rough-wall turbulent boundary layer", J. Wind Eng. Ind. Aerod., 90(10), 1151-1162.   DOI
22 Richards, P.J., Hoxey, R.P. and Short, L.J. (2001), "Wind pressure on a 6 m cube", J. Wind Eng. Ind. Aerod., 89(14-15), 1553-1564.   DOI
23 Richards, P.J., Hoxey, R.P., Connell, B.D. and Lander, D.P. (2007), "Wind-tunnel modelling of the Silsoe cube", J. Wind Eng. Ind. Aerod., 95(9-11), 1384-1399.   DOI
24 Salim, S.M. and Cheah, S.C. (2009), "Wall $y^{+}$ strategy for dealing with wall-bounded turbulent flows", Proceedings of the International Multi-Conference of Engineers and Computer Scientists, Hong Kong.