Direct numerical simulations of exhaust gas recirculation effect on multistage autoignition in the negative temperature combustion regime for stratified HCCI flow conditions by using H2O2 addition |
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| Authors: | Hossam A. El-Asrag Yiguang Ju |
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| Affiliation: | Department of Mechanical and Aerospace Engineering , Princeton University , Princeton , NJ , 08544 , USA |
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| Abstract: | Direct numerical simulations (DNSs) of a stratified flow in a homogeneous compression charge ignition (HCCI) engine are performed to investigate the exhaust gas recirculation (EGR) and temperature/mixture stratification effects on the autoignition of synthetic dimethyl ether (DME) in the negative temperature combustion region. Detailed chemistry for a DME/air mixture is employed and solved by a hybrid multi-time scale (HMTS) algorithm to reduce the computational cost. The effect of   | |
| Keywords: | direct numerical simulation HCCI engines stratification ignition delay negative temperature coefficient region |
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