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论文类型：期刊论文

发表时间：2015-01-01

发表刊物：PROCEEDINGS OF THE COMBUSTION INSTITUTE

收录刊物：SCIE、EI

卷号：35

期号：3

页面范围：3037-3044

ISSN号：1540-7489

关键字：Biodiesel surrogate; Skeletal mechanism; Low-temperature combustion; Decoupling methodology

摘要：A new skeletal surrogate model including methyl decenoate (MD), methyl 5-decenoate (MD5D), and n-decane was proposed. In the surrogate model, MD and MD5D were chosen to respectively represent the saturated methyl ester and unsaturated methyl ester in biodiesel, and n-decane was included to match the energy content and C/H/O ratio of actual biodiesel fuel. Based on a decoupling methodology, an oxidation mechanism for the biodiesel surrogate was constructed by integrating the skeletal large-molecule submechanisms for n-decane, MD and MD5D, a reduced C-2-C-3 mechanism, and a detailed H-2/CO/C-1 mechanism. The final mechanism for the biodiesel surrogate is composed of 60 species and 172 reactions. The mechanism was validated against experimental data, including ignition delay times in shock tubes and major species concentrations in jet-stirred reactors over wide operating conditions. Moreover, the mechanism was employed to simulate the combustion and emission characteristics of an engine operated in a low temperature combustion mode with SME as fuel. The overall agreement between the predictions and measurements is satisfactory. (C) 2014 The Combustion Institute. Published by Elsevier Inc. All rights reserved.