Large-scale quasi-steady modelling of a downburst outflow using a slot jet

Wind and Structures, An International Journal

Volumn 9, Issue 6, 2006, Pages 419-440

  Lin, W E ^a   Savory, E ^a  

^a UNIVERSITY OF WESTERN ONTARIO   (Canada)

Author keywords

Downburst outflow; Frontal curvature; Large scale wind tunnel; Localized intense wind; Microburst outflow; Slot jet; Thunderstorm wind load; Two dimensional wall jet

Indexed keywords

ANEMOMETERS; APPROXIMATION THEORY; COMPUTER SIMULATION; JETS; TEST FACILITIES; THUNDERSTORMS; TURBULENCE; VELOCITY MEASUREMENT;

DOWNBURST WIND LOADING; ENGINEERING RAMIFICATIONS; LARGE BOUNDARY LAYER WIND TUNNEL; THUNDERSTORM;

WIND POWER;

EID: 33751378513     PISSN: 12266116     EISSN: None     Source Type: Journal    
DOI: 10.12989/was.2006.9.6.419     Document Type: Article

References (48)

1. Abrahamsson, H., Johansson, B., and Löfdahl, L. (1994), "A turbulent plane two-dimensional wall-jet in a quiescent surrounding", Euro. J. Meek, B/Fluids, 13(5), 533-556.
2. Alahyari, A. and Longmire, E. K. (1995), "Dynamics of experimentally simulated microbursts", AIAA J., 33(11), 2128-2136.
3. American Society of Civil Engineers (1999), "Wind tunnel studies of buildings and structures", ASCE Manuals and Reports on Engineering Practice No. 67, second edition, editor: N. Isyumov, publisher: ASCE.
4. Charba, J. (1974), "Application of gravity current model to analysis of squall-line gust front", Mon. Weather Rev., 102, February, 140-156.
5. Chay, M. T. and Letchford, C. W. (2002), "Pressure distributions on a cube in a simulated thunderstorm downburst-Part A: Stationary downburst observations", J. Wind Eng. Ind. Aerodyn., 90, 711-732.
6. Choi, E. C. C. (2004), "Field measurement and experimental study of wind speed profile during thunderstorms", J. Wind Eng. Ind. Aerodyn., 92, 275-290.
7. Choi, E. C. C. and Hidayat F. A. (2002), "Dynamic response of structures to thunderstorm winds", Prog. Struct. Eng. Mater., 4, 408-416.
8. Cook, N. J. (1973), "On simulating the lower third of the urban adiabatic boundary layer in a wind tunnel", Atmos. Env., 7, 691-705.
9. Förthmann, E. (1934), "Über turbulente Strahlausbreitung", Ing. Arch. (Arch Appl. Mech.), 5(1), 42-54.
10. Translated as: "Turbulent jet expansion", NACA Technical Memorandum #789, March 1936.
11. Fujita, T. T. (1981), "Tornadoes and downbursts in the context of generalized planetary scales", J. Atmos. Sci, 38(8), 1511-1534.
12. Fujita, T. T. (1985), "The downburst: Microburst and macroburst", University of Chicago, Department of Geophysical Sciences, Satellite and Mesometeorology Research Project, Research Paper #210.
13. Fujita, T. T. (1990), "Downbursts: Meteorological features and wind field characteristics", J. Wind Eng. Ind. Aerodyn., 36, 75-86.
14. Fujita, T. T. and Wakimoto, R. M. (1981), "Five scales of airflow associated with a series of downbursts on 16 July 1980", Mon. Weather Rev., 109, 1439-1456 July.
15. Gartshore, I. and Hawaleshka, O. (1964), "The design of a two-dimensional blowing slot and its application to a turbulent wall jet in still air", McGill University, McGill Engineering Research Laboratory, Technical Note 64-5 June.
16. th International Conference on Wind Engineering, Lubbock, TX, USA, 2-5 June, 2233-2240.
17. Hjelmfelt, M. R. (1988), "Structure and life cycle of microburst outflows observed in Colorado", J. Appl. Meteorol., 27, 900-927.
18. Hjelmfelt, M. R. (2003), "Microbursts and their numerical simulation", Preprints of the Harold D. Orville Symposium, Rapid City, SD, USA, 26 April, 51-67. Available from: Institute of Atmospheric Sciences, South Dakota School of Mines and Technology, USA.
19. Holmes, J. D. (1992), "Physical modelling of thunderstorm downdrafts by wind-tunnel jet", Australian Wind Engineering Society Second Workshop on Wind Engineering, Melbourne, Australia, 20-21 February.
20. th International Conference on Wind Engineering, Copenhagen, Denmark, 21-25 June, publisher: Balkema, Netherlands, 1409-1415.
21. Holmes, J. D. (2001), Wind Loading of Structures, Spon Press, New York, NY, USA.
22. Holmes, J. D. and Oliver, S. E. (2000), "An empirical model of a downburst", Eng. Struct., 22, 1167-1172.
23. twin, H. P. A. H. (1973), "Measurements in a self-preserving plane wall jet in a positive pressure gradient", J. Fluid Mech., 61(1), 33-63.
24. Knowles, K. and Myszko, M. (1998), "Turbulence measurements in radial wall-jets", Exp. Therm. Fluid Sci., 17, 71-78.
25. Launder, B. E. and Rodi, W. (1981), "The turbulent wall jet", Prog. Aerospace Sci., 19, 81-128.
26. th International Conference on Wind Engineering, Copenhagen, Denmark, 21-25 June, publisher: Balkema, Netherlands, 1907-1912.
27. Letchford, C. W., Mans, C., and Chay, M. T. (2002), "Thunderstorms - their importance in wind engineering (a case for the next generation wind tunnel)", J. Wind Eng. Ind. Aerodyn., 90(12-15), 1415-1433.
28. Lin, W. E. (2005), "Large-scale physical simulation of a microburst outflow using a slot jet". University of Western Ontario, MESc thesis, December.
29. Lundgren, T. S., Yao, J., and Mansour, N. N. (1992), "Microburst modelling and scaling", J. Fluid Mech., 239, 461-488.
30. Mara, T. G. and Galsworthy, J. K. (2006), Private Communications.
31. th International Conference on Wind Engineering, Lubbock, TX, USA, 2-5 June, 2249-2256.
32. Mason, M. S., Letchford, C. W., and James, D. L. (2005), "Pulsed wall jet simulation of a stationary thunderstorm downburst, Part A: Physical structure and flow field characterization", J. Wind Eng. Ind. Aerodyn., 93, 557-580.
33. Mehta, R. D. (1977), "The aerodynamic design of blower tunnels with wide-angle diffusers", Prog. Aero. Sci, 18, 59-120.
34. Nicholls, M., Pielke, R., and Meroney, R. (1993), "Large eddy simulation of microburst winds flowing around a building", J. Wind Eng. Ind. Aerodyn., 46 & 47, 229-237.
35. Poreh, M., Tsuei, Y. G., and Cermak, J. E. (1967), "Investigation of a turbulent radial wall jet", J. Appl. Mech., 34, 457-463.
36. Proctor, F. H. (1988), "Numerical simulations of an isolated microburst. Part I: Dynamics and structure. J. Atmos. Sci., 45(21), 3137-3160.
37. Sarkar, P. P. and Haan, Jr., F. L. (2002), "Next generation wind tunnels for simulation of straight-line, thunderstorm- and tornado-like winds", Proceedings of the 34th Joint Meeting of the U.S.-Japan Panel on Wind and Seismic Effects, Gaithersburg, MD, USA, 13-15 May.
38. Savory, E., Parke, G A. R., Zeinoddini, M., Toy, N., and Disney, P. (2001), "Modelling of tornado and microburst-induced wind loading and failure of a lattice transmission tower", Eng. Struct., 23, 365-375.
39. Selvam, R. P. and Holmes J. D. (1992), "Numerical simulation of thunderstorm downdrafts", J. Wind Eng. Ind. Aerodyn., 41-44, 2817-2825.
40. Verhoff, A. (1970), "Steady and pulsating two-dimensional turbulent wall jets in a uniform stream", Princeton University, PhD thesis.
41. Wakimoto, R. M. (1982), "The life cycle of thunderstorm gust fronts as viewed with Doppler radar and rawinsonde data", Mon. Weather Rev., 110, 1060-1082.
42. Wakimoto, R. M. (2001), "Convectively driven high wind events", Severe Convective Storms, Meteor. Monogr., 50, 255-298. American Meteorological Society. Editor: C.A. Doswell III.
43. Wilson, J. W., Roberts, R. D., Kessinger, C., and McCarthy, J. (1984), "Microburst wind structure and evaluation of Doppler radar for airport wind shear detection", J. Climate Appl. Meteorol., 23, 898-915.
44. Wilson, J. W. and Wakimoto, R. M. (2001), "The discovery of the downburst: T. T. Fujita's contribution", Bull. Amer. Meteorol. Soc., 82(1), January, 49-62.
45. Wood, G. S., Kwok, K. C. S., Motteram, N. A., and Fletcher, D. F. (2001), "Physical and numerical modelling of thunderstorm downbursts", J. Wind Eng. Ind. Aerodyn., 89, 535-552.
46. Wygnanski, I., Katz, Y., and Horev, E. (1992), "On the applicability of various scaling laws to the turbulent wall jet", J. Fluid Mech., 234, 669-690.
47. Xu, Z. (2004), "Experimental and analytical modeling of high intensity winds", University of Western Ontario, PhD thesis, December.
48. Yao, J. and Lundgren, T. S. (1996), "Experimental investigation of microbursts", Exp. Fluids, 21, 17-25.