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Suppression of Low Strain Rate Flames by an Agent (NISTIR 6588)



Anthony P. Hamins, Matthew F. Bundy, I K. Puri


The structure and suppression of low strain rate methane-air nonpremixed flames were investigated experimentally and computationally. Measurements of the critical suppression conditions were conducted using N2, CO2, and CF3Br added to the fuel or oxidizer streams. Temperature measurements were made with small platinum thermocouples (0.025 mm wire diameter) that were coated with a fine layer (0.010 mm) of SiO2 and corrected for radiative losses. Numerical simulations of the non-luminous diluted flames included radiative heat losses by participating gaseous species. A previously developed narrowband model of radiative transfer was incorporated into the one-dimensional flame simulation. For comparison, radiation was also modeled as an optically thin gray gas, represented by Plank mean absorption coefficients.
NIST Interagency/Internal Report (NISTIR) - 6588
Report Number


fire safety, fire research, fire suppression, halons, flame extinction


Hamins, A. , Bundy, M. and Puri, I. (2000), Suppression of Low Strain Rate Flames by an Agent (NISTIR 6588), NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed April 22, 2024)
Created November 1, 2000, Updated November 10, 2018