A surrogate fuel for kerosene
A surrogate fuel for kerosene
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DOI：
10.1016/j.proci.2008.06.218
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发表时间：
2009-01-01
影响因子：
3.4
通讯作者：
Peters, N.
中科院分区：
文献类型：
--
作者：
Honnet, S.;Seshadri, K.;Peters, N.
进行了实验和数值研究，以开发一种可以再现煤油燃烧的选定方面的替代品。喷气燃料，特别是Jet- al， Jet- a和JP-8是煤油型燃料。替代燃料被定义为燃烧特性与商业燃料相似的几种碳氢化合物的混合物。一种80%正癸烷和20%重量的1,2,4-三甲苯的混合物，称为亚琛替代物，被选为煤油的可能替代物。采用逆流结构进行了实验。测试的燃料是煤油和亚琛替代品。燃烧亚琛替代物的层流非预混流的熄灭、自燃和烟尘体积分数的临界条件与燃烧煤油的火焰相似。建立了描述亚琛替代物燃烧的化学动力学机制。该机制是使用先前开发的组分：正癸烷和1,2,4-三甲基苯的化学动力学机制组装的。对正癸烷的化学动力学机理进行了改进。利用激波管、快速压缩机、射流搅拌反应器、燃烧器稳定预混火焰和自由传播预混火焰的实验数据验证了组合机理。采用化学动力学机制对亚琛替代物进行了数值计算。自燃临界条件和烟尘体积分数的计算值与实验数据吻合较好。本研究表明，亚琛替代物的化学动力学机理可用于预测煤油的非预混燃烧。(c) 2009年燃烧研究所。Elsevier Inc.出版。版权所有。
Experimental and numerical studies are carried out to develop a surrogate that can reproduce selected aspects of combustion of kerosene. Jet fuels, in particular Jet-Al, Jet-A, and JP-8 are kerosene type fuels. Surrogate fuels are defined as mixtures of few hydrocarbon compounds with combustion characteristics similar to those of commercial fuels. A mixture of n-decane 80% and 1,2,4-trimethylbenzene 20% by weight, called the Aachen surrogate, is selected for consideration as a possible surrogate of kerosene. Experiments are carried out employing the counterflow configuration. The fuels tested are kerosene and the Aachen surrogate. Critical conditions of extinction, autoignition, and volume fraction of soot measured in laminar non premixed flows burning the Aachen surrogate are found to be similar to those in flames burning kerosene.A chemical-kinetic mechanism is developed to describe the combustion of the Aachen surrogate. This mechanism is assembled using previously developed chemical-kinetic mechanisms for the components: n-decane and 1,2,4-trimethylbenzene. Improvements are made to the previously developed chemical-kinetic mechanism for n-decane. The combined mechanisms are validated using experimental data obtained from shock tubes, rapid compression machines, jet stirred reactor, burner stabilized premixed flames, and a freely propagating premixed flame. Numerical calculations are performed using the chemical-kinetic mechanism for the Aachen surrogate. The calculated values of the critical conditions of autoignition and soot volume fraction agree well with experimental data. The present study shows that the chemical-kinetic mechanism for the Aachen surrogate can be employed to predict non premixed combustion of kerosene. (c) 2009 The Combustion Institute. Published by Elsevier Inc. All rights reserved.