RESEARCH PAPERS: Radiative Transfer

A Method for Modeling the Mitigation of Hazardous Fire Thermal Radiation by Water Spray Curtains

[+] Author and Article Information
S. Dembele, A. Delmas, J. F. Sacadura

Centre de Thermique de l’Insa de Lyon (CETHIL), UPRESA CNRS Q5008, Bâtiment 404, 20 Avenue Albert Einstein, 69621 Villeurbanne Cedex, France

J. Heat Transfer 119(4), 746-753 (Nov 01, 1997) (8 pages) doi:10.1115/1.2824179 History: Received July 25, 1996; Revised May 07, 1997; Online December 05, 2007


A radiative transfer model describing the interactions between hazardous fire thermal radiation and water sprays is presented. Both the liquid (water droplets) and gaseous (mainly water vapor and carbon dioxide) phases of the spray are considered in the present work. Radiative properties of the polydisperse water droplets are derived from Mie theory. The gaseous phase behavior is handled by the correlated-k distribution method, where the k-distribution function is evaluated for Malkmus narrow-band statistical model. The radiative transfer equation, in its integral form, is solved by a discrete ordinates method. After a general description of the radiative model developed and the experimental task to validate it, some results are discussed on its accuracy and CPU time. A deeper analysis is also carried out to point out the influence of the main parameters involved in the problem.

Copyright © 1997 by The American Society of Mechanical Engineers
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