An experimental study of methane-oxygen-carbon dioxide premixed flame dynamics in non-adiabatic cylinderical meso-scale reactors with the backward facing step

被引：20

作者：

Baigmohammadi, Mohammadreza ^{[1
]}

Tabejamaat, Sadegh ^{[1
]}

Farsiani, Yasaman ^{[1
]}

机构：

[1] Amirkabir Univ Technol, Tehran Polytech, Dept Aerosp Engn, CTL, Tehran 158754413, Iran

来源：

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION | 2015年 / 95卷

关键词：

Combustion; Flame; Reactor; Methane; Oxygen; Carbon dioxide; MICRO FLOW REACTOR; LAMINAR BURNING VELOCITY; WEAK FLAMES; EQUIVALENCE RATIO; IGNITION CHARACTERISTICS; HYDROGEN/AIR FLAMES; NUMBER DEPENDENCE; COMBUSTION; PROPAGATION; MIXTURE;

D O I：

10.1016/j.cep.2015.05.013

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In the present study, we experimentally evaluated the effects of geometrical parameters, Reynolds number, dilution percent, and equivalence ratio on methane-oxygen-carbon dioxide flame dynamics in non-adiabatic cylindrical meso-scale reactors with the backward facing step. Five flame regimes of blowout, marginal, stationary (asymmetric and spinning), RERI, and flashback were observed during the tests. The results showed that adding carbon dioxide to methane-oxygen mixture could extend RERI flame regimes in the meso-scale reactors. Moreover, it was shown that the presence of RERI flame regime could lead to more uniform temperature distribution on the outer surface of the lengthy meso-scale reactors as compared to the stationary flame regimes. Also, it was demonstrated that increasing the average flow speed in the meso-scale reactors decreased the average frequency of RERI flame regimes. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：105 / 123

页数：19

共 36 条

[1] Investigations on the Formation of Planar Flames in Mesoscale Divergent Channels and Prediction of Burning Velocity at High Temperatures [J].