Measurements of convective and radiative heating in wildland fires
作者： David Frankman , Brent W. Webb , Bret W. Butler , Daniel Jimenez , Jason M. Forthofer
DOI: 10.1071/WF11097
关键词:
摘要: Time-resolved irradiance and convective heating cooling of fast-response thermopile sensors were measured in 13 natural prescribed wildland fires under a variety fuel ambient conditions. It was shown that sensor exposed to the fire environment subject rapid fluctuations transfer whereas by windowed much less variable intime, increasing nearly monotonically with approach flamefrontandlargelydecliningwithitspassage.Irradiancebeneathtwocrownfirespeakedat200and300kWm � 2 ,peak associated surface fuels reached 100kWm peak for three instances burning shrub 132kWm . The radiative energy accounted 79% variance consumption. Convective heatingatthesensorsurfacevariedfrom15%tovaluesexceedingtheradiativeflux.Detailedmeasurementsofconvective rates are presented. Results indicate relative contribution each total release is dependent on environment.
sci-hub.se 参考文章(13)
P.A. Santoni, A. Simeoni, J.L. Rossi, F. Bosseur, F. Morandini, X. Silvani, J.H. Balbi, D. Cancellieri, L. Rossi, Instrumentation of wildland fire: Characterisation of a fire spreading through a Mediterranean shrub Fire Safety Journal. ,vol. 41, pp. 171- 184 ,(2006) , 10.1016/J.FIRESAF.2005.11.010
Frédéric Morandini, Xavier Silvani, Lucile Rossi, Paul-Antoine Santoni, Albert Simeoni, Jacques-Henri Balbi, Jean Louis Rossi, Thierry Marcelli, Fire Spread Experiment Across Mediterranean Shrub: Influence of Wind on Flame Front Properties Fire Safety Journal. ,vol. 41, pp. 229- 235 ,(2006) , 10.1016/J.FIRESAF.2006.01.006
Patrick H. Freeborn, Martin J. Wooster, Wei Min Hao, Cecily A. Ryan, Bryce L. Nordgren, Stephen P. Baker, Charles Ichoku, Relationships between energy release, fuel mass loss, and trace gas and aerosol emissions during laboratory biomass fires Journal of Geophysical Research. ,vol. 113, ,(2008) , 10.1029/2007JD008679
F. A. Albini, Iterative solution of the radiation transport equations governing spread of fire in wildland fuel Combustion, Explosion, and Shock Waves. ,vol. 32, pp. 534- 543 ,(1996) , 10.1007/BF01998575
B W Butler, J Cohen, D J Latham, R D Schuette, P Sopko, K S Shannon, D Jimenez, L S Bradshaw, Measurements of radiant emissive power and temperatures in crown fires Canadian Journal of Forest Research. ,vol. 34, pp. 1577- 1587 ,(2004) , 10.1139/X04-060
Bret W Butler, Jack D Cohen, Firefighter Safety Zones: A Theoretical Model Based on Radiative Heating International Journal of Wildland Fire. ,vol. 8, pp. 73- 77 ,(1998) , 10.1071/WF9980073
Miguel G. Cruz, Bret W. Butler, Domingos X. Viegas, Pedro Palheiro, Characterization of flame radiosity in shrubland fires Combustion and Flame. ,vol. 158, pp. 1970- 1976 ,(2011) , 10.1016/J.COMBUSTFLAME.2011.03.002
Xavier Silvani, Frédéric Morandini, Fire spread experiments in the field: Temperature and heat fluxes measurements Fire Safety Journal. ,vol. 44, pp. 279- 285 ,(2009) , 10.1016/J.FIRESAF.2008.06.004
KM Yedinak, JM Forthofer, JD Cohen, MA Finney, None, Analysis of the profile of an open flame from a vertical fuel source Forest Ecology and Management. ,vol. 234, ,(2006) , 10.1016/J.FORECO.2006.08.125
W. R. Anderson, E. A. Catchpole, B. W. Butler, Convective heat transfer in fire spread through fine fuel beds International Journal of Wildland Fire. ,vol. 19, pp. 284- 298 ,(2010) , 10.1071/WF09021