化工学报2011，Vol.62Issue(9)：2490-2498,9.DOI:10.3969/j.issn.0438-1157.2011.09.016
基于互动小火焰模型的内燃机燃烧过程大涡模拟
Large eddy simulation of combustion processes in ICE based on RIF model
摘要
Abstract
The representative interactive flamelets ( RIF) model was coupled with the large eddy-simulation (LES) method to predict the turbulent combustion in a diesel engine. The new approach is specifically suitable for the simulation of the complicated combustion processes in internal combustion engines because the multi-scale and highly-transient turbulent motion can be well reproduced, and detailed chemical mechanism can be used. By combining the KIVALES-RIF code developed in previous work with a reduced w-heptane oxidation mechanism, the combustion processes and emission characteristics of a single-cylinder version of the Caterpillar 3400 series heavy-duty diesel engine was simulated under the baseline operating condition. The results indicated that the predicted ignition delay, in-cylinder pressure, heat release rate and pollutants emission levels were in good agreements with the experimental results. Comparison between the predictions of the Reynolds averaged Navier-Stokes (RANS) method and the LES method showed that the turbulence model played an extremely important role in the prediction of the combustion processes.关键词
内燃机燃烧/大涡模拟/RIF模型/火焰结构/污染物排放Key words
diesel combustion/ large eddy simulation/ representative interactive flamelets model/ flame structure/ pollutants emission分类
能源科技引用本文复制引用
刘戈,解茂昭,贾明..基于互动小火焰模型的内燃机燃烧过程大涡模拟[J].化工学报,2011,62(9):2490-2498,9.基金项目
国家自然科学基金项目(50806008) （50806008）
国家重点基础研究发展计划项目(2007CB210002). （2007CB210002）
