Soot particle size distributions in premixed stretch-stabilized flat ethylene-oxygen-argon flames

被引：29

作者：

Camacho, Joaquin ^{[1
]}

Singh, Ajay V. ^{[1
]}

Wang, Weijing ^{[2
]}

Shan, Ruiqin ^{[3
]}

Yapp, Edward K. Y. ^{[3
]}

Chen, Dongping ^{[1
]}

Kraft, Markus ^{[1
,2
]}

Wang, Hai ^{[1
]}

机构：

[1] Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA

[2] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637459, Singapore

[3] Univ Cambridge, Dept Chem Engn & Biotechnol, Cambridge CB2 3RA, England

来源：

PROCEEDINGS OF THE COMBUSTION INSTITUTE | 2017年 / 36卷 / 01期

关键词：

Soot; Laminar flame; Particle size distribution; Modeling; NUMERICAL-SIMULATION; NASCENT SOOT; SHOCK-TUBE; COAGULATION; NANOPARTICLES; SENSITIVITY; EFFICIENCY; PYROLYSIS; EVOLUTION; ACETYLENE;

D O I：

10.1016/j.proci.2016.06.170

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Evolution of particle size distribution function (PSDF) was studied in premixed stretch-stabilized flat flames for the first time. The purpose is to demonstrate that stretch-stabilized flames can broaden the experimental flame condition space for studying soot formation in a pseudo-one dimensional flow configuration. PSDFs were measured in three series of atmospheric-pressure ethylene-oxygen-argon flames with maximum temperatures around 1980, 2000, and 2160 K. The measured PSDFs show a strong effect of flame temperature as nucleation and growth of soot is found to be suppressed towards high temperatures. Simulations using a population balance soot model show reasonably good agreement with the 1980 and 2000 K series of flames, but it significantly overpredicts the number density and size of soot in the highest temperature flame. Nu-merical tests suggest that the discrepancy can be caused by high-temperature reversibility in surface growth and other processes. (C) 2016 by The Combustion Institute. Published by Elsevier Inc.

引用

页码：1001 / 1009

页数：9

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