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Detailed Diesel Combustion and Soot Formation Analysis with Improved Wall Model Using Large Eddy Simulation

Authors :
Beini Zhou
Masahiro Horikoshi
Akira Kikusato
Jin Kusaka
Yasuhiro Daisho
Kiyotaka Sato
Hidefumi Fujimoto
Source :
SAE International Journal of Engines. 9:405-416
Publication Year :
2015
Publisher :
SAE International, 2015.

Abstract

A mixed time-scale subgrid large eddy simulation was used to simulate mixture formation, combustion and soot formation under the influence of turbulence during diesel engine combustion. To account for the effects of engine wall heat transfer on combustion, the KIVA code's standard wall model was replaced to accommodate more realistic boundary conditions. This were carried out by implementing the non-isothermal wall model of Angelberger et al. with modifications and incorporating the log law from Pope's method to account for the wall surface roughness. Soot and NOx emissions predicted with the new model are compared to experimental data acquired under various EGR conditions.

Details

ISSN :
19463944 and 19463936
Volume :
9
Database :
OpenAIRE
Journal :
SAE International Journal of Engines
Accession number :
edsair.doi...........32e045235172d5fad505775c50edae52
Full Text :
https://doi.org/10.4271/2015-32-0715