NUMERICAL-SIMULATION ON COOLING OF THE FIRE-INDUCED AIR-FLOW BY SPRINKLER WATER SPRAYS

被引:27
作者
CHOW, WK
FONG, NK
机构
[1] Department of Building Services Engineering, Hong Kong Polytechnic, Hung Hom
关键词
D O I
10.1016/0379-7112(91)90023-R
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
By the air drag and cooling effect of water droplets, the cooling of the fire-induced hot air flow by sprinkler water sprays is studied by using a three-dimensional field modelling technique. This gives a 'microscopic' description of visualizing how the sprinkler interacts with a smoke layer. Macroscopic parameters, such as drag-to-buoyancy ratio, convective cooling rate, etc., can be computed accordingly. With such a model, it is possible for the fire-safety engineers to design proper location, type and performance of sprinkler systems. Since experimental data for validating the model are absent, it is concluded that measurement from full-scale burning tests in a sprinklered compartment is needed.
引用
收藏
页码:263 / 290
页数:28
相关论文
共 37 条
  • [21] Galea, Markatos, A review of mathematical modelling of aircraft cabin fires, Appl. Math Modelling, 11, pp. 162-176, (1987)
  • [22] Cox, Kumar, Field modelling of fire in forced ventilation enclosures, Combustion Science and Technology, 52, pp. 7-23, (1987)
  • [23] Chow, Leung, Application of field model to tunnel fire services design, BHRA 6th Int. Symp. on the Aerodynamics & Ventilation of Vehicle Tunnel, pp. 495-510, (1988)
  • [24] van de Leur, Kleijn, Hoogendoorn, Numerical study of the stratified smoke flow in a corridor-full scale calculations, Fire Safety J., 14, (1989)
  • [25] Chow, Leung, Fire-induced convective flow inside an enclosure before flashover: numerical experiments, Building Services Engng Res. Technol., 10, pp. 51-59, (1989)
  • [26] Markatos, Pericleous, Cox, A novel approach to the field modelling of fires, Physiochem. Hydrodyn., 7, pp. 125-143, (1986)
  • [27] Beyler, The interaction of Fire and Sprinklers, NBS-GCR-78-121, (1978)
  • [28] Chow, On the evaporation effect of a sprinkler water spray, Fire Technol, pp. 364-373, (1989)
  • [29] Markatos, The mathematical modelling of turbulent flows, Appl. Math Modelling, 10, (1986)
  • [30] Holman, Heat Transfer., (1986)