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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Fast-flame limit for hydrogen/methane-air mixtures

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Author(s):
Ciccarelli, G. [1] ; Chaumeix, N. [2] ; Mendiburu, A. Z. [3] ; N'Guessan, K. [2] ; Comandini, A. [2]
Total Authors: 5
Affiliation:
[1] Queens Univ, Kingston, ON - Canada
[2] CNRS, INSIS, ICARE, Paris - France
[3] Sao Paulo State Univ, Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Source: PROCEEDINGS OF THE COMBUSTION INSTITUTE; v. 37, n. 3, p. 3661-3668, 2019.
Web of Science Citations: 2
Abstract

Flame acceleration experiments were performed in a 10cm inner-diameter tube filled with evenly spaced 0.43 blockage ratio orifice plates. The critical mixture composition required for flame acceleration to a fast-flame was measured for four methane/hydrogen fuel-air mixtures at initial temperatures of 298 K, 423 K, and 573 K. These conditions provide a large range in the Zeldovich number between 12 and 28, where the Zeldovich number was calculated from the laminar burning velocity obtained from 1-D flame simulations. The data collapsed very well when the expansion ratio across the flame (calculated at the critical condition) was plotted versus the Zeldovich number. This is consistent with correlation proposed by Dorofeev {[}7], that was based on experimental data obtained over a narrower Zeldovich number range. For pure hydrogen fuel, the critical expansion ratio was found to be between 2 and 4, and for pure methane the critical expansion ratio was as high as 8, for an initial temperature of 573 K. (C) 2018 The Combustion Institute. Published by Elsevier Inc. All rights reserved. (AU)

FAPESP's process: 15/25435-5 - FLAME PROPAGATION AND SUPPRESSION OF ANHYDROUS ETHANOL - AIR FLAMES.
Grantee:João Andrade de Carvalho Junior
Support type: Regular Research Grants
FAPESP's process: 15/23351-9 - FLAME PROPAGATION AND SUPPRESSION OF ANHYDROUS ETHANOL - AIR MIXTURES.
Grantee:Andrés Armando Mendiburu Zevallos
Support type: Scholarships in Brazil - Post-Doctorate