DOI QR코드

DOI QR Code

Wind induced internal pressure overshoot in buildings with opening

  • Guha, T.K. (Department of Mechanical Engineering, The University of Auckland) ;
  • Sharma, R.N. (Department of Mechanical Engineering, The University of Auckland) ;
  • Richards, P.J. (Department of Mechanical Engineering, The University of Auckland)
  • 투고 : 2010.11.30
  • 심사 : 2012.02.10
  • 발행 : 2013.01.25

초록

The wind-induced transient response of internal pressure following the creation of a sudden dominant opening during the occurrence of high external pressure, in low-rise residential and industrial buildings was numerically investigated. The values of the ill-defined parameters namely the flow contraction coefficient, loss coefficient and the effective slug length were calibrated by matching the analytical response with the computational fluid dynamics predictions. The effect of a sudden i.e., "instantaneously created" windward opening in the Texas Technical University (TTU) test building envelope was studied for two different envelope flexibility-leakage combinations namely: (1) a quasi-statically flexible and non-porous envelope and (2) a quasi-statically flexible and porous envelope. The responses forced by creating the openings at different time leads/lags with respect to the occurrence of the peak external pressure showed that for cases where the openings are created in close temporal proximity to the peak pressure, the transient overshoot values of internal pressure could be higher than the peak values of internal pressure in the pre-sequent or subsequent resonant response. In addition, the influence of time taken for opening creation on the level of overshoot was also investigated for the TTU building for the two different envelope characteristics. Non-dimensional overshoot factors are presented for a variety of cavity volume-opening area combinations for (1) buildings with rigid/quasi-statically flexible non-porous envelope, and (2) buildings with rigid/quasi-statically flexible and porous envelope (representing most low rise residential and industrial buildings). While the factors appear slightly on the high side due to conservative assumptions made in the analysis, a careful consideration regarding the implication of the timing and magnitude of such overshoots during strong gusts, in relation to the steady state internal pressure response in cyclonic regions, is warranted.

키워드

참고문헌

  1. American Society of CIVIL Engineers Standard (2006), Minimum design loads for buildings and other structures, ACSE/SEI 7-05, New York.
  2. Ansys CFX-11.0. (2007), ANSYS Europe Ltd.
  3. Chaplin G.C., Randall, J.R. and Baker, C.J. (2000), "The turbulent ventilation of a single opening enclosure", J. Wind Eng. Ind. Aerod., 85(2), 145-161. https://doi.org/10.1016/S0167-6105(99)00136-1
  4. Cook, N.J. (1992), "Discussion of plenary session-4", J. Wind Eng. Ind. Aerod., 41-44, 227- 228.
  5. Ginger, J.D., Holmes, J.D. and Kopp, G.A. (2008), "Effect of building volume and opening size on fluctuating internal pressure", Wind Struct., 11(5), 361-376. https://doi.org/10.12989/was.2008.11.5.361
  6. Ginger, J.D., Mehta, K.C. and Yeatts, B.B. (1997), "Internal pressures in a low-rise full scale building", J. Wind Eng. Ind. Aerod., 72, 163-174. https://doi.org/10.1016/S0167-6105(97)00241-9
  7. Guha, T.K., Sharma, R.N. and Richards, P.J. (2009), "The effect of background leakage on wind induced internal pressure fluctuations in a low rise building with a dominant opening", Proceedings of the 11th Americas Conference on Wind Engineering, San Juan, Puerto Rico, June.
  8. Holmes, J.D. (1979), "Mean and fluctuating pressure induced by wind", Proceedings of the 5th International Conference on Wind Engineering, Colorado State University, USA.
  9. Holmes, J.D. and Ginger, J.D. (2010), "Internal pressures-the dominant opening case-a review", Proceedings of the 9th UK Conference on Wind Engineering, Bristol, UK, September.
  10. Kaimal, J.C., Wyngaard, J.C., Izumi, Y. and Cot'e, O.R. (1972), "Spectral characteristics of surface layer turbulence", Q.J.R. Meteorol. Soc., 98(417), 563-598. https://doi.org/10.1002/qj.49709841707
  11. Liu, H. and Saathoff, P.J. (1981), "Building Internal pressure: Sudden change", J. Eng. Mech.- ASCE, 107(2), 309-321.
  12. Matlab 7.9.0.529 (2009), The MathWorksTM.
  13. Matsui, M., Tamura, Y. and Yoshida, A. (2008), "Wind tunnel experiment for unsteady internal pressure in building", Proceedings of the 6th International Colloquium on Bluff Body Aerodynamics and Applications, Milan, Italy, July.
  14. Menter, F.R. (1994), "Two-equation eddy-viscosity turbulence models for engineering applications", AIAA J. 32, 1598-1605. https://doi.org/10.2514/3.12149
  15. Novak, M. and Kassem, M. (1990), "Effect of leakage and acoustical damping on free vibration of light roofs backed by cavities", J. Wind Eng. Ind. Aerod,, 36(1), 289-300. https://doi.org/10.1016/0167-6105(90)90313-2
  16. Oh, J.H., Kopp, G.A. and Inculet, D.R. (2007), "The UWO contribution to the NIST aerodynamic database for wind loads on low buildings: Part 3. Internal pressures", J. Wind Eng. Ind. Aerod., 95(8), 755-779. https://doi.org/10.1016/j.jweia.2007.01.007
  17. Richards, P.J. and Hoxey, R.P. (1993), "Appropriate boundary conditions for computational wind engineering models using the k-ϵ turbulence model", J. Wind Eng. Ind. Aerod., 46-47, 145-153. https://doi.org/10.1016/0167-6105(93)90124-7
  18. Sharma, R.N. (1996), The influence of internal pressure on wind loading under tropical cyclone conditions, Ph.D. Thesis, The University of Auckland, New Zealand.
  19. Sharma, R.N. (2000), "Transient response of building internal pressure to a sudden opening in the turbulent wind", Proceedings of the 4th International Colloquium on Bluff Body Aerodynamics & Applications, Bochum, Germany, September.
  20. Sharma, R.N. and Richards, P.J. (1997a), "Computational modelling of the transient response of building internal pressure to a sudden opening", J. Wind Eng. Ind. Aerod., 72, 149-161. https://doi.org/10.1016/S0167-6105(97)00244-4
  21. Sharma, R. N. and Richards, P. J. (1997b), "The effect of roof flexibility on internal pressure fluctuations", J. Wind Eng. Ind. Aerod., 72, 175-186. https://doi.org/10.1016/S0167-6105(97)00252-3
  22. Sharma, R.N. and Richards, P.J. (1997c), "Computational modelling in the prediction of building internal pressure gain functions", J. Wind Eng. Ind. Aerod., 67-68, 815-825. https://doi.org/10.1016/S0167-6105(97)00121-9
  23. Sharma, R.N. and Richards, P.J. (2009), "Response to: 'Discussion of: "Net pressures on the roof of a low-rise building with wall openings", J. Wind Eng. Ind. Aerod., 97, 322-323. https://doi.org/10.1016/j.jweia.2009.08.002
  24. Shinozuka, M. and Jan, C.M. (1972), "Digital simulation of random processes and its applications", J. Sound Vib., 26(1), 111-128.
  25. Stathopoulos, T. and Luchian, H.D. (1989), "Transient wind-induced internal pressures", J. Eng. Mech.- ASCE, 115(7), 1501-1514. https://doi.org/10.1061/(ASCE)0733-9399(1989)115:7(1501)
  26. Vickery, B.J. (1965), On the flow behind a coarse grid and its use as a model of atmospheric turbulence in studies related to wind loads on buildings, NPL-Report No. 1143.
  27. Vickery, B.J. (1986), "Gust factors for internal pressures in low rise buildings", J. Wind Eng. Ind. Aerod., 23, 259-271. https://doi.org/10.1016/0167-6105(86)90047-4
  28. Vickery, B.J. (1994), "Internal pressures and interactions with the building envelope", J. Wind Eng. Ind. Aerod., 53(1-2), 125-144. https://doi.org/10.1016/0167-6105(94)90022-1
  29. Vickery, B.J. and Bloxham, C. (1992), "Internal pressure dynamics with a dominant opening", J. Wind Eng. Ind. Aerod., 41(1), 193-204. https://doi.org/10.1016/0167-6105(92)90409-4
  30. Vickery, B.J. and Georgiou, P.N. (1991), "A simplified approach to the determination of the influence of internal pressure on the dynamics of large span roofs", J. Wind Eng. Ind. Aerod., 38(2-3), 357-369. https://doi.org/10.1016/0167-6105(91)90054-Z
  31. Yang, J.N. (1972), "Simulations of random envelope processes", J. Sound Vib., 21(1), 73 -85. https://doi.org/10.1016/0022-460X(72)90207-6
  32. Yeatts, B.B. and Mehta, K.C. (1992), "Field study of internal pressures", Proceedings of the 7th US National Conference on Wind Engineering, University of California, USA, June.
  33. Yu, S.C., Lou, W.J. and Sun, B.N. (2008), "Wind-induced internal pressure response for structure with single windward opening and background leakage", J. Zhejiang University, 9(3), 313-321.

피인용 문헌

  1. Experimental investigation of wind-induced internal pressures in nominally sealed building structures vol.20, pp.7, 2019, https://doi.org/10.1631/jzus.a1900091
  2. Steady-state and transient wind characteristics of low-rise building roofs with openings in vulnerable areas vol.23, pp.11, 2013, https://doi.org/10.1177/1369433220911116
  3. Wind tunnel study on fluctuating internal pressure of open building induced by tangential flow vol.32, pp.2, 2013, https://doi.org/10.12989/was.2021.32.2.105