Open AccessDevelopment and Validation of a Reduced DME Mechanism Applicable to Various Combustion Modes in Internal Combustion Engines
Author(s) -
Gregory T. Chin,
Jy Chen,
Vi H. Rapp,
Robert W. Dibble
Publication year - 2011
Publication title -
journal of combustion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.45
H-Index - 18
eISSN - 2090-1968
pISSN - 2090-1976
DOI - 10.1155/2011/630580
Subject(s) - combustion , shock tube , homogeneous charge compression ignition , mechanism (biology) , autoignition temperature , piston (optics) , chemistry , ignition system , dimethyl ether , internal combustion engine , automotive engineering , computer science , thermodynamics , combustion chamber , physics , engineering , catalysis , shock wave , organic chemistry , quantum mechanics , wavefront , optics
A 28-species reduced chemistry mechanism for Dimethyl Ether (DME) combustion is developed on the basis of a recent detailed mechanism by Zhao et al. (2008). The construction of reduced chemistry was carried out with automatic algorithms incorporating newly developed strategies. The performance of the reduced mechanism is assessed over a wide range of combustion conditions anticipated to occur in future advanced piston internal combustion engines, such as HCCI, SAHCCI, and PCCI. Overall, the reduced chemistry gives results in good agreement with those from the detailed mechanism for all the combustion modes tested. While the detailed mechanism by Zhao et al. (2008) shows reasonable agreement with the shock tube autoignition delay data, the detailed mechanism requires further improvement in order to better predict HCCI combustion under engine conditions
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