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Application of CMC Model in 0D Simulation of Diesel Engine

Authors
Kwon, JaesungYang, JeonghyeonKim, Beomsoo
Issue Date
Mar-2021
Publisher
KOREAN SOC COMBUSTION
Keywords
Conditional moment closure; Diesel engine; NOx; 0D simulation
Citation
JOURNAL OF THE KOREAN SOCIETY OF COMBUSTION, v.26, no.1, pp 41 - 50
Pages
10
Indexed
ESCI
KCI
Journal Title
JOURNAL OF THE KOREAN SOCIETY OF COMBUSTION
Volume
26
Number
1
Start Page
41
End Page
50
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/4018
DOI
10.15231/jksc.2021.26.1.041
ISSN
1226-0959
2466-2089
Abstract
A numerical analysis of the diesel engine performance and pollutant emissions was conducted by 0D simulation based on the CMC combustion model for turbulent diffusion flames. For the combustion analysis, the CMC model, the skeletal mechanism for n-heptane and the NOx mechanism included in GRI 3.0 were used. The evaporation process of fuel was simulated using the multizone spray model, and the density weighted PDF for the mixture fraction was calculated in real time based on the momentum conservation principle with the empirical models for spray tip velocity. The analysis was conducted by applying a multiple flame structure to the operating conditions of the multi-stage fuel injection method, and the predicted results well matched to the experimental data for the pressure variations. It also shows good qualitative and quantitative results for NOx.
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Yang, Jeong Hyeon
해양과학대학 (기계시스템공학과)
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