Calculated concentration distributions and time histories of key species in an acoustically forced laminar flame

被引：8

作者：

Foo, Kae Ken ^{[1
,2
]}

Evans, Michael J. ^{[1
,2
]}

Sun, Zhiwei ^{[1
,2
]}

Medwell, Paul R. ^{[1
,2
]}

Alwahabi, Zeyad T. ^{[1
,3
]}

Nathan, Graham J. ^{[1
,2
]}

Dally, Bassam B. ^{[1
,2
]}

机构：

[1] Univ Adelaide, Ctr Energy Technol, Adelaide, SA 5005, Australia

[2] Univ Adelaide, Sch Mech Engn, Adelaide, SA 5005, Australia

[3] Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia

来源：

COMBUSTION AND FLAME | 2019年 / 204卷

基金：

澳大利亚研究理事会;

关键词：

Ethylene; Numerical model; Residence time; Time-varying laminar flame; Zero-gravity; SOOT VOLUME FRACTION; DIFFUSION FLAMES; FLICKERING METHANE; JET FLAME; ETHYLENE; COFLOW; TEMPERATURE; EVOLUTION; OXIDATION; DIAMETER;

D O I：

10.1016/j.combustflame.2019.03.019

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A numerical study of the fluid-chemical interactions in a steady and time-varying laminar non-premixed jet flame was conducted to advance understanding of the complex interplay between the flame chemistry, fluid dynamics and soot evolution. Modelling of the steady flame is performed with two alternative reduced mechanisms and compared with the significant body of experimental data that are now available to provide confidence in the calculated values of mixture fraction, which was not previously available. A Method-of-Moments soot model with a 47-species mechanism provides much better agreement with the measured soot volume fraction than does a 32-species mechanism, but both mechanisms predict both the temporal and spatial profiles of mixture fraction to agree within 6%. Nevertheless, neither scheme predicts a reduction in temperature that coincides approximately with the location immediately upstream from the measured soot field. The calculations of the unsteady flame also reveal new insights about the cause of the pinch-off point and the neck zone, together with the role of buoyancy at the flame tip. (C) 2019 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

引用

页码：189 / 203

页数：15

共 48 条

[1] In situ adaptive tabulation (ISAT) for combustion chemistry in a network of perfectly stirred reactors (PSRs) [J].

Adhikari, Sudip ;

Sayre, Alan ;

Chandy, Abhilash J. .

COMPUTERS & CHEMICAL ENGINEERING, 2017, 97 :124-134

[2] Numerically accurate computational techniques for optimal estimator analyses of multi-parameter models [J].

Berger, Lukas ;

Kleinheinz, Konstantin ;

Attili, Antonio ;

Bisetti, Fabrizio ;

Pitsch, Heinz ;

Mueller, Michael E. .

COMBUSTION THEORY AND MODELLING, 2018, 22 (03) :480-504

[3] Measured flame structure and kinetics in a fuel-rich ethylene flame [J].

Bhargava, A ;

Westmoreland, PR .

COMBUSTION AND FLAME, 1998, 113 (03) :333-347

[4] On the formation and early evolution of soot in turbulent nonpremixed flames [J].

Bisetti, Fabrizio ;

Blanquart, Guillaume ;

Mueller, Michael E. ;

Pitsch, Heinz .

COMBUSTION AND FLAME, 2012, 159 (01) :317-335

[5] Chemical mechanism for high temperature combustion of engine relevant fuels with emphasis on soot precursors [J].

Blanquart, G. ;

Pepiot-Desjardins, P. ;

Pitsch, H. .

COMBUSTION AND FLAME, 2009, 156 (03) :588-607

[6] The flicker of luminous flames [J].

Chamberlin, DS ;

Rose, A .

INDUSTRIAL AND ENGINEERING CHEMISTRY, 1928, 20 (01) :1013-1016

[7]

Chen L.D., 1988, 22 S INT COMBUSTIONT, P677, DOI [10.1016/S0082-0784(89)80075-X, DOI 10.1016/S0082-0784(89)80075-X]

[8] RESPONSE TO ACOUSTIC FORCING OF LAMINAR COFLOW JET DIFFUSION FLAMES [J].

Chrystie, Robin ;

Chung, Suk Ho .

COMBUSTION SCIENCE AND TECHNOLOGY, 2014, 186 (4-5) :409-420

[9] Computational and experimental investigation of the interaction of soot and NO in coflow diffusion flames [J].

Connelly, B. C. ;

Long, M. B. ;

Smooke, M. D. ;

Hall, R. J. ;

Colket, M. B. .

PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2009, 32 :777-784

[10]

Connelly B.C., 2009, THESIS

← 1 2 3 4 5 →