A numerical study on the response of chemically active flame inhibitors to strain rate variations

Badhuk, P and Ravikrishna, RV (2021) A numerical study on the response of chemically active flame inhibitors to strain rate variations. In: Proceedings of the Combustion Institute, 38 (3). pp. 4615-4623.

PDF pro_com_ins_38_3_4615-4623_2021.pdf - Published Version Restricted to Registered users only Download (1MB) | Request a copy

Abstract

In the current work, a framework for assessing the effect of strain rate on the effectiveness of chemically active flame inhibitors is presented. The effect of inhibitors added in a counterflow diffusion flame of methane is studied numerically. Four different compounds representing iron, potassium, phosphorus, and bromine-based inhibitors are chosen for a detailed study. The flame variables under the influence of these inhibitors are investigated in terms of peak flame temperature, heat release rate and radical pool concentration. Analysis of the above parameters indicates that while the effectiveness of iron, potassium, and phosphorus-based inhibitors reduce significantly at high strain rates, that of the bromine-based inhibitor remains relatively unaffected throughout the range of strain rates studied. Through quantitative reaction pathway analysis, it is shown for the first time that the composition of the radical pool has a great bearing on the effectiveness of the inhibitor. Differences in the observed behaviour between different inhibitors are also explained based on this analysis.

Item Type:	Journal Article
Publication:	Proceedings of the Combustion Institute
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to Elsevier Ltd.
Keywords:	Bromine; Iron; Phosphorus; Potassium, Counterflow diffusion flames; Effect of strain; Flame temperatures; Heat Release Rate (HRR); High strain rates; Rate variation; Reaction pathways, Strain rate
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	18 Apr 2023 07:03
Last Modified:	18 Apr 2023 07:03
URI:	https://eprints.iisc.ac.in/id/eprint/80645

Actions (login required)

View Item