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http://dx.doi.org/10.3795/KSME-B.2011.35.1.075

A Study on the Reduction of Reaction Mechanism for the Ignition of Dimethyl Ether  

Ryu, Bong-Woo (Dept. of Mechanical Engineering, Hanyang Univ.)
Park, Sung-Wook (Dept. of Mechanical Engineering, Hanyang Univ.)
Lee, Chang-Sik (Dept. of Mechanical Engineering, Hanyang Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.35, no.1, 2011 , pp. 75-82 More about this Journal
Abstract
The numerical analysis of the reduction of reaction mechanism for the ignition of dimethyl ether (DME) was performed. On the basis of a detailed reaction mechanism involving 79 species and 351 reactions, the peak molar concentration and sensitivity analysis were conducted in a homogeneous reactor model. The reduced reaction mechanism involving 44 species and 166 reactions at the threshold value $7.5{\times}10^{-5}$ of the molar peak concentration was established by comparing the ignition delays the reduced mechanism with those the detailed mechanism. The predicted results of the reduced mechanism applied to the single-zone homogeneous charge compression ignition (HCCI) engine model were in agreement with those of the detailed mechanism. Therefore, this reduced mechanism can be used to accurately simulate the ignition and combustion process of compression ignition engine using DME fuel.
Keywords
Dimethyl Ether(DME); Reaction Mechanism Reduction; Detailed Reaction Mechanics; Reduced Reaction Mechanism; Sensitivity Analysis;
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