Abstract

In this paper, we perform a comparative numerical analysis of turbulent combustion and harmful substance emission from a homogeneous combustion chamber operating on pure n-decane and mixed n-decane/hydrogen or n-decane/syngas fuels. The calculations were performed using the ANSYS Fluent program, and a reduced kinetic mechanism describing the oxidation of the fuels under consideration was developed. The hydrogen or syngas addition to n-decane in a 50/50 volume ratio is shown to lead to a decrease in temperature both inside the combustion chamber and in its outlet section. There is a simultaneous decrease in the carbon oxides and nitrogen emission. The depletion of the air–fuel mixture with an excess air coefficient of α = 2.3–2.5 sharply reduces the nitric oxide emission and simultaneously increases significantly the carbon monoxide emission. In this depletion, total NO and CO emission index increases more than twofold.

中文翻译：

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正癸烷中加氢或合成气对均质燃烧室有害物质排放影响的数值研究

摘要

在本文中，我们执行湍流燃烧及有害物质排放的纯比较数值分析由均质燃烧室操作ñ -癸烷和混合ñ -癸烷/氢或ñ -癸烷/合成气燃料。使用ANSYS Fluent程序进行计算，并开发了描述所考虑的燃料氧化的简化动力学机制。氢气或合成气除Ñ示出了以50/50体积比的癸烷导致燃烧室内部及其出口部分的温度降低。同时减少了碳氧化物和氮的排放。空气系数过高的α= 2.3–2.5的空气-燃料混合物的消耗会急剧减少一氧化氮的排放，同时会显着增加一氧化碳的排放。在这种消耗下，总NO和CO排放指数增加了两倍以上。