内燃机工程2024，Vol.45Issue(2)：34-42,9.DOI:10.13949/j.cnki.nrjgc.2024.02.005
大空间尺度下预燃室射流火焰发展历程的光学诊断和模拟研究
Optical Diagnostics and Numerical Simulation of Pre-Chamber Jet Flame Development Process under Large Spatial Scales
叶映 1明镇洋 2王昌庆 3文铭升 2刘海峰 2尧命发2
作者信息
- 1. 船舶与海洋工程特种装备和动力系统国家工程研究中心,上海 201111||中国船舶集团有限公司第七一一研究所,上海 201111
- 2. 天津大学 先进内燃动力全国重点实验室,天津 300350
- 3. 中国船舶集团有限公司第七一一研究所,上海 201111
- 折叠
摘要
Abstract
Based on a constant volume combustion bomb(CVCB),the jet flame development process in the main combustion chamber were optically researched under similar spatial and thermodynamic conditions as a low-speed pre-chamber dual-fuel marine engine.A method based on the full-mesh mapping of different combustion models was proposed to simulate the flame development with two combustion stages.The process of flame development was simulated based on the mapping method.The applicability and accuracy of the model for combustion flame speed prediction were verified based on the experimental data of the test device.The research results show that the amount of fuel injection in the pre-chamber directly affects the maximum penetration distance of the jet flame and the flame intensity.The mixture in the main combustion chamber needs to be rich enough to be ignited.For the simulation of the combustion process,the well-stirred reactor(WSR)model was used for the first stage combustion simulation with the jet development speed and the maximum penetration distance.The G equation was used in the second stage combustion to accurately simulate the flame speed in all directions.The two models connected by the mapping method have high prediction accuracies for the overall speed of flame expansion in the two stages of combustion.关键词
定容燃烧弹/低速船机/双燃料/光学诊断/数值模拟Key words
constant volume combustion bomb(CVCB)/low-speed marine engine/dual fuel/optical diagnostics/numerical simulation分类
能源科技引用本文复制引用
叶映,明镇洋,王昌庆,文铭升,刘海峰,尧命发..大空间尺度下预燃室射流火焰发展历程的光学诊断和模拟研究[J].内燃机工程,2024,45(2):34-42,9.
