重庆理工大学学报（自然科学版）2017，Vol.31Issue(6)：23-30,8.DOI:10.3969/j.issn.1674-8425(z).2017.06.004
某柴油发动机缸内燃烧的数值模拟及优化分析
Numerical Simulation and Optimization Analysis of Combustion in a Diesel Engine
摘要
Abstract
This research uses hybrid multi-objective Gradient exploration algorithm (HMGE) which is based on Kriging surrogate model to optimize and analysis combustion process and performance of diesel engine,and all of the numerical simulation are completed by FLUENT software.Caliber reducing rate,clearance height,convex platform height,injection cone angle are choose as optimization variables,average temperature,average pressure,soot and NOx emissions are the optimization objectives.After achieving multi-objective optimization,two data mining methods,analysis of variance (ANOVA) and self-organizing feature map (SOM) are used to qualitatively and quantitatively analyze the design variables and objective functions,and reveals the influence of design variables to design objectives.The results show that a good dynamic performance demands smaller convex platform height and caliber reducing rate;less soot emissions need larger clearance,and lower emissions of nitrogen oxides needs smaller convex platform height and smaller caliber reducing rate.关键词
柴油发动机/燃烧/代理模型/优化算法Key words
diesel engine/combustion/surrogate model/optimization analysis分类
交通运输引用本文复制引用
赖晨光,陈永燕,王媛,段孟华,周毓婷..某柴油发动机缸内燃烧的数值模拟及优化分析[J].重庆理工大学学报（自然科学版）,2017,31(6):23-30,8.基金项目
国家自然科学基金资助项目(51305477) （51305477）
重庆理工大学研究生创新基金资助项目(YCX2015204) （YCX2015204）
