Application of CMC Model in 0D Simulation of Diesel Engine

Jaesung Kwon; Jeonghyeon Yang; Beomsoo Kim

doi:10.15231/jksc.2021.26.1.041

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2021 Vol.26, Issue 1 Preview Page Next Page

Research Article

Application of CMC Model in 0D Simulation of Diesel Engine 디젤 엔진 0D 해석을 위한 CMC 모델 응용

31 March 2021. pp. 41-50

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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.

Keywords

Conditional moment closure

Diesel engine

NOx

0D simulation

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Information

Publisher :The Korean Society Combustion
Publisher(Ko) :한국연소학회
Journal Title :Journal of The Korean Society Combustion
Journal Title(Ko) :한국연소학회지
Volume : 26
No :1
Pages :41-50
Received Date : 2020-12-07
Revised Date : 2021-01-27
Accepted Date : 2021-01-28
DOI :https://doi.org/10.15231/jksc.2021.26.1.041

Journal of The Korean Society Combustion ISSN:1226-0959(Print) 2466-2089(Online) 한국연소학회지

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