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

Published

November 1, 2000

Author(s)

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

Abstract

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.

Citation

NIST Interagency/Internal Report (NISTIR) - 6588

Report Number

6588

NIST Pub Series

NIST Interagency/Internal Report (NISTIR)

Pub Type

NIST Pubs

Download Paper

https://doi.org/10.6028/NIST.ir.6588v1

Keywords

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

Citation

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], https://doi.org/10.6028/NIST.ir.6588v1 (Accessed December 26, 2024)