耦合欧拉喷雾模型/火焰面燃烧模型的模拟  

Simulation of Coupling Euler Spray Model and Flamelet-Based Combustion Model

作　　者：商伟伟 何志霞 玄铁民[1] 曹嘉伟 García-Oliver J M Shang Weiwei;He Zhixia;Xuan Tiemin;Cao Jiawei;García-Oliver J M(School of Energy and Power Engineering,Jiangsu University,Zhenjiang 212013,China;Institute for Energy Research,Jiangsu University,Zhenjiang 212013,China;CMT-Motores Térmicos,Universitat Politècnica de València,Valencia E-46022,Spain)

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013 [2]江苏大学能源研究院,江苏镇江212013 [3]瓦伦西亚理工大学CMT研究所,瓦伦西亚E-46022,西班牙

出　　处：《内燃机学报》2021年第6期531-538,共8页Transactions of Csice

基　　金：国家自然科学基金资助项目(51906087);江苏省自然科学基金资助项目(BK20190856);江苏大学高级人才基金资助项目(18JDG029);江苏省研究生科研创新基金资助项目(KYCX18_2242).

摘　　要：基于ECN标准Spray A工况的试验数据,在开源计算流体软件OpenFOAM的雷诺时均(RANS)方法下耦合欧拉喷雾模型和非稳态火焰面进度变量(UFPV)燃烧模型,对非燃烧和燃烧工况下的正十二烷喷射雾化与湍流燃烧过程建模,并分析了正十二烷5种不同骨架化学反应机理的计算结果.结果表明:耦合模型能够准确预测喷雾浓度场和速度场的空间分布以及准稳态时刻的火焰结构;滞燃期、火焰浮起长度和碳烟前驱物的预测对化学反应机理非常敏感.The Spray A from engine combustion network(ECN)was modelled in the frame of Reynolds-averaged Navier-stokes equations(RANS)with a Euler spray model in conjunction with an unsteady flamelet progress vari-able(UFPV)combustion model.The spray atomization and turbulent combustion of n-dodecane under non-combustion and combustion conditions were modeled respectively,and the calculation results of five different framework chemical reaction mechanisms of n-dodecane were analyzed.The results show that the models can accurately predict the distribution of spray concentration profile and velocity profile in time and space,as well as the flame structure at the quasi-steady state.The ignition delay,lift-off length and soot are sensitive by chemical reaction mechanism.

关 键 词：正十二烷 喷雾模型 非稳态火焰面模型 化学反应机理 

分 类 号：TK401[动力工程及工程热物理—动力机械及工程]