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《内燃机学报》[ISSN:1006-6977/CN:61-1281/TN]

卷:

期数:

2021年06

页码:

531-538

栏目:

出版日期:

2021-11-25

文章信息/Info

Title:

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

作者:

商伟伟; 何志霞; 玄铁民; 曹嘉伟; García-Oliver JM

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

Author(s):

Shang Weiwei;  He Zhixia;  Xuan Tiemin;  Cao Jiawer;  García-Oliver JM

1. School of Energy and Power Engineering, Jiangsu University,Zhenjiang 212013, China;2. Institute for Energy Research,Jiangsu University,Zhenjiang 212013, China;3.CMT-Motores Té-rmicos, Universitat Politècnica de Val-ència, Valencia E-46022, Spain

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

Keywords:

n-dodecane;  spray model; unsteady flamelet model;  chemistry reaction mechanism

分类号:

TK410

文献标志码:

A

摘要:

基于Spray A试验数据在开源计算流体软件OpenFOAM环境下耦合欧拉喷雾模型和非稳态火焰面进度变量燃烧模型，分别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进行建模，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：该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.

Abstract:

Abstract: 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 variable(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.

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更新日期/Last Update: 2021-11-25