Simplified Chemical Kinetic Mechanism of Premixed Laminar Combustion of Methanol-Air Mixture

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Simplified Chemical Kinetic Mechanism of Premixed Laminar Combustion of Methanol-Air Mixture

更新时间：2025-07-09

- Simplified Chemical Kinetic Mechanism of Premixed Laminar Combustion of Methanol-Air Mixture
- Vol. 43, Issue 9, Pages: 27-31(2009)
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK124
- Online First：10 September 2009，
  
  Published：2009
- 稿件说明：
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Simplified Chemical Kinetic Mechanism of Premixed Laminar Combustion of Methanol-Air Mixture[J]. 2009, 43(9): 27-31.
DOI：

Simplified Chemical Kinetic Mechanism of Premixed Laminar Combustion of Methanol-Air Mixture[J]. 2009, 43(9): 27-31. DOI：

摘要

基于甲醇氧化的详细反应历程

利用敏感性分析的方法

提出了一个用于描述甲醇空气预混层流燃烧速度的包含18种组分、28步基元反应的简化化学反应动力学机理.研究发现

在甲醇的氧化过程中

甲醇的分解反应及H、OH等自由基的链锁反应具有十分高的敏感性

其中HCO+M和H+O

分别是产生H、OH自由基的主要反应.计算结果与实验结果对比表明

该简化机理可以较合理地模拟当量比为0.6～1.2以及不同初始温度下的层流燃烧速度和火焰结构.与详细机理相比

该机理更适合与CFD三维数值模拟软件耦合.

Abstract

On the basis of the detailed chemical kinetic mechanism of methanol oxidation

the simplified chemical kinetic mechanism of methanol including 18 species and 28-step elementary reaction was presented to describe premixed laminar flame speed with sensitivity analysis. It is found that the methanol oxidation exhibits strong sensitivity to the kinetics of methanol decomposition and the chain reaction of radicals such as H and OH

in which HCO+M and H+O

are the main reactions to generate H and OH radicals

respectively. The comparison between the calculated results and experimental data shows that the present simplified mechanism could simulate laminar flame speed and flame structure reasonably in the range of equivalence ratios from 0.6 to 1.2 and at different initial temperatures. Compared with the detailed mechanism

the simplified mechanism is more suitable to coupling with three-dimensional CFD models.

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references

蒋德明. 内燃机燃烧与排放学[M]. 西安:西安交通大学出版社, 2001.

NORTON T S, DRYER F L. Some new observations on methanol oxidation chemistry [J]. Combustion Science and Technology, 1989, 63(1):107-129.

EGOLFOPOULOS F N, DU D X, LAW C K. A comprehensive study of methanol kinetics in freely-propagating and burner:stabilized flames, flow and static reactors, and shock tubes [J]. Combustion Science and Technology, 1992, 83(1):33-75.

LI J, ZHAO Z W, KAZAKOV A, et al. A comprehensive kinetic mechanism for CO, CH2O, and CH3OH combustion[J]. International Journal of Chemical Kinetics, 2007, 39(3):109-136. [5] HELD T J, DRYER F L. A comprehensive mechanism for methanol oxidation [J]. International Journal of Chemical Kinetics, 1998, 30(11):805-830.

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天然气掺氢配合废气再循环发动机燃烧过程的数值模拟. 西安交通大学学报,2009, 43(5):22-25.

液化石油气-氢气-空气层流燃烧特性的研究. 西安交通大学学报,2008, 42(9):1081-1085.

二甲醚-氢气-空气混合气预混燃烧的实验研究. 西安交通大学学报,2008, 42(5):542-545.

甲醇缸内直喷发动机的燃烧特性. 西安交通大学学报,2008, 42(11): 1372-1376.

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