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Publication Citation: Fluid Dynamics of Agent Discharge (NIST SP 861)

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Author(s): William M. Pitts; Jiann C. Yang; G. Gmurczyk; Leonard Y. Cooper; William L. Grosshandler; W G. Cleveland; Cary Presser;
Title: Fluid Dynamics of Agent Discharge (NIST SP 861)
Published: April 01, 1994
Abstract: The extinguishment of a fire using gaseous agents is a very complicated process which is not completely understood. Current fire-fighting agents such as halon 1301 and halon 1211 are believed to function by a combination of chemical (catalytic removal of hydrogen atoms at the flame front due to the presence of bromine atoms) and physical (cooling and dilution of flame gases) actions. All of the proposed alternative agents are known to be less effective (i.e., considerably higher molar concentrations of the agent are required) than halon 1301. This reduction in effectiveness is attributed to the absence of bromine atoms in these chemicals and thus the absence of a highly effective chemical means of fire extinguishment.
Citation: Special Publication (NIST SP) - 861
Keywords: halons, fluid dynamics, discharge rate, dispersions, equations, sprays
Research Areas: Building and Fire Research
PDF version: PDF Document Click here to retrieve PDF version of paper (15MB)