2008, Volume 10, Issue 10
Strategic Study of CAE >> 2008, Volume 10, Issue 10
An experimental and numerical study on the interaction between water mist and smoke
State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230027, China
Next Previous
Abstract
This paper investigated the interaction between water mist and smoke in experiments, revealing the variation trends of smoke temperature and species concentrations. Variation trends were also obtained under the same scenes by FDS(fire dynamic simulator) simulation. Experiment results were compared with simulation. The comparison comes out that with reasonable computation gird setting, FDS can predict the variation trends quite well. In practical water mist system design, FDS may be applied to predict the behavior of the designed system.
Keywords
fire smoke ; water mist ; FDS
Figures
图1
图2
图3
图4
图5
图6
图7
图8
References
[ 1 ] Grant G, Brenton J, Drysdale D.Fire suppression by water sprays [ A] .Progress in Energy and Combustion Science[ C] .2000 ,26 : 79 -130
[ 2 ] Jones A, Nolan P F.Discussion on the use of fine water sprays or mists for fire suppression[ J] .J of Loss Prev Process Ind, 1995 , 8 ( 1 ) : 17 -22 link1
[ 3 ] Mawhinney J R, Richardson J K.A state -of -the -art review of water mist fire suppression research and development[ R] .1996. Internal Report No 718
[ 4 ] St -Georges M, Buchlin J M.Detailed single spray experimental measurements and one -dimensional modeling [ J ] .Int J Multi-phase Flow, 1994 , 20 ( 6 ) : 979 -992 link1
[ 5 ] Lentati A M, Chelliah H K.Dynamics of water droplets in a coun- terflow field and their effect on flame extinction [ J] .Combustion and Flame, 1998 , 115 ( 1 ) :158 -179 link1
[ 6 ] Alpert R L.Incentive for use of misting sprays as a fire suppres- sion flooding agent [ A] .Water Mist Fire Suppression Workshop Proceedings[ C ] .Gaithersburgh: National Institute of Standards and Technology, 1993.31 -35 link1
[ 7 ] Mawhinney J R, Eng P.Engineering criteria for water mist fire suppression system [ A] .Water Mist Fire Suppression Workshop [ C] , 1993.37 -73
[ 8 ] Chow W K, Cheung Y L.Simulation of sprinkler -hot layer inter- action using a field model[ J] .Fire and Materials, 1994 , 18 ( 6 ) : 359 -379 link1
[ 9 ] Kim M B, et al.Burning rate of a pool fire with downward -di- rected sprays[ J] .Fire safety Journal, 1996 ,27 ( 1 ) : 37 -48 link1
[10] 丛北华,秦俊,廖光煊,等.细水雾作用下固体PMMA燃烧特性的实验研究[J].自然科学进展,2005,15(10):1244-1249 link1
[11] 周华,朱畅,范明豪,等.高压细水雾灭火系统的雾滴直径测量与灭火试验[J].自然科学进展,2004,14(8):950-954 link1
[12] Chow W K, Yao B.Numerical modeling for interaction of a water spray with smoke layer [ J] .Numerical Heat Transfer: Part A: Applications, 2001 , 39 ( 3 ) : 267 -283 link1
[13] Xiang X D, Colbeck I.Charged water drops and smoke dissipa- tion[ J] .Fire Safety Journal, 1997 , 28 ( 3 ) : 227 -232 link1
[14] Nyankina N, Novozhilov V.Prediction of fire environment under water mist suppression conditions by two -phase zone model[ J] . Journal of Applied Fire Science, 2000—2001 ,10 ( 3 ) : 193 -214
[15] Vaari J.A transient one -zone computer model for total flooding water mist fire suppression in ventilated enclosures [ J ] . Fire Safety Journal, 2002 , 37 ( 2 ) : 229 -257 link1
京公网安备 11010502051620号
