Combustion kinetics of alternative fuels, Part-IV: Extending reaction mechanism “DLR Concise” to include oxygenates components
IF 5.8
2区 工程技术
Q2 ENERGY & FUELS
引用次数: 0
Abstract
In our previous work on hydrocarbons (Kathrotia et al., Fuel 2021;302:120736) and jet fuels (Kathrotia et al., Fuel 2021;302:120737) the molecular fuel composition was shown to be an important aspect of understanding the fuel combustion chemistry and, more importantly, the emission behavior. In this extension, we elaborate our high-temperature jet fuel surrogate reaction mechanism (referred hereafter as DLR Concise) to include the chemical class of oxygenated hydrocarbons for transportation fuels. These oxygen containing species have been widely investigated in ground transportation fuels. With DLR Concise we aim for a flexible reaction model for alternative fuel surrogates; a single reaction model with the target application to both aviation- as well as transportation-fuels.
The main focus of this work is to describe the reaction kinetics of oxymethylene ethers (OMEx, x = 0–5) in low to high temperatures. OMEs are promising alternative fuels that can be derived from a variety of sustainable sources. The absence or reduction of C-C bonds makes them attractive for the reduction of soot precursors and soot emissions. The reaction model of OMEs presented in this work is extensively validated against wide-ranging experiments both in-house and from literature. The main purpose of the DLR Concise is to provide a reaction mechanism with a large degree in flexibility to simulate various fuel surrogates (existing and new) and predict pollutants for the fuel assessment based on fuel molecular structure.
A comprehensive model validation as well as new in-house experimental data set on C1-C4 alcohols and primary reference fuel (PRF90) measured in high-temperature flow reactor is available as supplemental material.
替代燃料的燃烧动力学，第 IV 部分：扩展反应机制 "DLR 简明版"，纳入含氧组分
在我们之前关于碳氢化合物（Kathrotia 等人，《燃料 2021》；302:120736）和喷气燃料（Kathrotia 等人，《燃料 2021》；302:120737）的研究中，分子燃料成分被证明是理解燃料燃烧化学性质的一个重要方面，更重要的是，是理解排放行为的一个重要方面。在这一扩展中，我们详细阐述了高温喷气燃料代用反应机理（以下简称 DLR 简明版），将含氧碳氢化合物化学类别纳入运输燃料。这些含氧物种已在地面运输燃料中得到广泛研究。通过 DLR Concise，我们旨在为替代燃料代用物质建立一个灵活的反应模型；一个同时适用于航空燃料和运输燃料的单一反应模型。氧亚甲基醚是一种很有前景的替代燃料，可从多种可持续来源中提取。由于不存在或减少了 C-C 键，它们在减少烟尘前体和烟尘排放方面具有吸引力。本研究中介绍的 OMEs 反应模型已通过内部和文献中的大量实验进行了广泛验证。DLR Concise 的主要目的是提供一种具有高度灵活性的反应机制，以模拟各种代用燃料（现有的和新的），并根据燃料分子结构预测燃料评估中的污染物。
本文章由计算机程序翻译，如有差异，请以英文原文为准。
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来源期刊
Combustion and Flame
工程技术-工程：化工
CiteScore
9.50
自引率
20.50%
发文量
631
审稿时长
3.8 months
期刊介绍：
The mission of the journal is to publish high quality work from experimental, theoretical, and computational investigations on the fundamentals of combustion phenomena and closely allied matters. While submissions in all pertinent areas are welcomed, past and recent focus of the journal has been on:
Development and validation of reaction kinetics, reduction of reaction mechanisms and modeling of combustion systems, including:
Conventional, alternative and surrogate fuels;
Pollutants;
Particulate and aerosol formation and abatement;
Heterogeneous processes.
Experimental, theoretical, and computational studies of laminar and turbulent combustion phenomena, including:
Premixed and non-premixed flames;
Ignition and extinction phenomena;
Flame propagation;
Flame structure;
Instabilities and swirl;
Flame spread;
Multi-phase reactants.
Advances in diagnostic and computational methods in combustion, including:
Measurement and simulation of scalar and vector properties;
Novel techniques;
State-of-the art applications.
Fundamental investigations of combustion technologies and systems, including:
Internal combustion engines;
Gas turbines;
Small- and large-scale stationary combustion and power generation;
Catalytic combustion;
Combustion synthesis;
Combustion under extreme conditions;
New concepts.
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