二甲醚燃烧机理的简化及其均质压燃燃烧验证

摘要/Abstract

摘要：

摘要：基于积分计算奇异摄动法简化了二甲醚骨架机理，构建了包含24种物质和20个反应的二甲醚简化机理，并采用发动机单区模型进行验证.结果表明：所提出的二甲醚简化机理具有Curran等提出的详细机理的低温反应、负温度系数区、甲酸生成与消耗过程、高温反应等特征，而且与Curran等提出的详细机理的计算结果较吻合，表明其适用于二甲醚均质压燃过程的模拟计算；利用重要性因子进一步“修剪”后的二甲醚简化机理的适用性较差，表明原二甲醚简化机理的简洁度较高.

关键词: 二甲醚, 积分计算奇异摄动, 机理简化, 均质压燃

Abstract:

Abstract： Based on the integration computational singular perturbation (ICSP), a reduced mechanism consisting of 24 species and 20 reactions was simplified from the skeletal mechanism. The reduced mechanism was validated using closed internal combustion engine simulator, and it was found that the reduced mechanism reproduced the important characteristics of dimethyl ether (DME) detailed chemical kinetic model, such as low temperature reaction, negative temperature coeffcient (NTC), the production and consumption of HCOOH and high temperature reaction. The results calculated from the reduced mechanism agree with that from the detailed one, which means that the reduced mechanism is suitable for the numerical simulation of homogeneous charge compression ignition (HCCI) fueled with DME. Besides, the poor applicability of reduced mechanism after trimmed by important index iuustrates the high simplicity of original reduced mechanism.

Key words: dimethyl ether (DME), integration computational singular perturbation (ICSP), mechanism simplification, homogeneous charge compression ignition (HCCI)

中图分类号:

TK 46

李鹏飞，乔信起，吴作柱. 二甲醚燃烧机理的简化及其均质压燃燃烧验证[J]. 上海交通大学学报（自然版）, 2015, 49(01): 129-134.

LI Pengfei,QIAO Xinqi,WU Zuozhu. Simplification of DME Combustion Mechanism and Validation with HCCI Combustion[J]. Journal of Shanghai Jiaotong University, 2015, 49(01): 129-134.

参考文献

［1］Lu T, Law C K. A criterion based on computational singular perturbation for the identification of quasi steady state species: A reduced mechanism for methane oxidation with NO chemistry ［J］. Combustion and Flame, 2008, 154(4): 761774.

［2］Bradley D, Morley C. Comprehensive chemical kinetics［M/OL］. Holland: Elsevier, 1997: 293437［20140401］.http:∥www.sciencedirect.com/science/article/pii/S0069804097800192.

［3］Vajada S, Valko P, Turanyi T. Principal component analysis of kinetic models ［J］. Int J Chemical Kinetics, 1985, 17(1): 5581.

［4］Lu T F, Law C K. A directed relation graph method for mechanism reduction ［J］. Proceedings of the Combustion Institute, 2005, 30(1): 13331341.

［5］Lam S H, Goussis D A. The CSP method for simplifying kinetics ［J］. Int J Chemical Kinetics, 1994, 26 (4): 461486.

［6］吴作柱. 内燃机燃料燃烧详细化学动力学机理简化研究［D］. 上海: 上海交通大学机械与动力工程学院, 2014.

［7］Ren Z, Pope S B. The use of slow manifolds in reactive flows ［J］. Combustion and Flame, 2006, 147(4): 243261.

［8］Curran H J, Fischer S L, Dryer F L. The reaction kinetics of dimethyl ether. II. Lowtemperature oxidation in flow reactors［J］. International Journal of Chemical Kinetics, 2000, 32(12): 741759.

［9］Fischer S L, Dryer F L, Curran H J. The reaction kinetics of dimethyl ether. I. Hightemperature pyrolysis and oxidation in flow reactors ［J］. International Journal of Chemical Kinetics, 2000, 32(12): 713740.

［10］Kim H, Cho S, Min K. Reduced chemical kinetic model of DME for HCCI combustion ［EB/OL］. (20030519)［20140410］.http:∥papers.sae.org/2003011822/.

［11］梁霞, 尧命发. 二甲基醚均质压燃化学动力学简化模型的研究［J］. 内燃机学报, 2005, 23(4): 329335.

LIANG Xia, YAO Mingfa. Study on reduced chemical kinetic model for DME HCCI combustion ［J］.Transactions of CSICE, 2005, 23(4): 329335.

［12］石宇, 张煜盛, 莫春兰, 等. DME 简化反应模型及其在 HCCI 燃烧分析中的应用研究［J］. 安全与环境学报, 2006, 6(2): 105110.

SHI Yu, ZHANG Yusheng, MO Chunlan, et al. New reduced kinetic model for HCCI engine fuelled with dimethyl ether ［J］. Journal of Safety and Environment, 2006, 6(2): 105110.

［13］魏远文，林灵，徐凯. 二甲醚均质充量压燃简化机理研究［J］. 西华大学学报:自然科学版, 2010, 29(1): 3336.

WEI Yuanwen, LIN Ling, XU Kai. Study on the reduced mechanism of dimethyl ether for homogeneous charge compression ignition ［J］. Journal of Xihua University: Natural Science Edition, 2010, 29(1): 3336.

［14］吴作柱, 乔信起, 黄震. 采用自定义阈值的计算奇异扰动在构建二甲醚简化机理上的应用［J］. 上海交通大学学报, 2013, 47(3): 376380.

WU Zuozhu, QIAO Xinqi, HUANG Zhen. A criterion based on computational singular perturbation for the construction of reduced mechanism for dimethyl ether ［J］. Journal of Shanghai Jiaotong University, 2013, 47(3): 376380.

［15］Goussis D A. On the construction and use of reduced chemical kinetic mechanisms produced on the basis of given algebraic relations ［J］. Journal Computational Physics, 1996, 128(2): 261273.

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