某重型燃气轮机DLN燃烧室数值模拟-热态分析
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摘要
数值模拟是开展燃气轮机燃烧室性能分析的重要手段。本文通过外形3D扫描与内型工业CT扫描构建了某重型燃气轮机天然气DLN燃烧室的完整几何模型。通过对该完整三维建模进行高质量网格划分,并综合燃气轮机循环分析给出的工况参数,开展了数值模拟分析。本文热态模拟了燃烧室内流场、温度场及组分场,发现该型燃烧室喷嘴布置方式存在中心区域不能完全燃烧的风险。研究方法与结果可为燃气轮机DLN燃烧室的分析与设计提供参考。
Numerical simulation is an important approach to carry out the performance analysis for gas turbine combustor. By 3 D scanning of the external profile and industrial CT of the internal profile, the full geometry model of the DLN combustor of a heavy gas turbine has been reconstructed. High-quality 3 D mesh for the 3 D full model is generated and operation conditions is obtained by analysis of the overall operation data of the gas turbine, and then numerical simulation has been accomplished. This paper, as hot analysis part of the job, simulates the flow filed, temperature filed and species filed of the combustor. It is found that the arrangement of the nozzles is easy to cause incomplete combustion in the central zone of the combustor. Methods and results of this paper offer valuable reference for analysis and design of DLN combustor of gas turbines.
Numerical simulation is an important approach to carry out the performance analysis for gas turbine combustor. By 3 D scanning of the external profile and industrial CT of the internal profile, the full geometry model of the DLN combustor of a heavy gas turbine has been reconstructed. High-quality 3 D mesh for the 3 D full model is generated and operation conditions is obtained by analysis of the overall operation data of the gas turbine, and then numerical simulation has been accomplished. This paper, as hot analysis part of the job, simulates the flow filed, temperature filed and species filed of the combustor. It is found that the arrangement of the nozzles is easy to cause incomplete combustion in the central zone of the combustor. Methods and results of this paper offer valuable reference for analysis and design of DLN combustor of gas turbines.
引文
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[2] DE S,AGARWAL A K,CHAUDHURI S,et al.Modeling and Simulation of Turbulent Combustion [M].Singapore:Springer Verlag,2018.
[3] LEFEBVRE A H,BALLAL D R.Gas turbine combustion [M].Boca Raton:CRC press,2010.
[4] 邵卫卫,赵岩,刘艳,等.燃气轮机燃烧室预混燃烧器天然气燃料/空气掺混均匀性研究[J].中国电机工程学报,2017,37(03):795-803.
[5] 王翰林.压力对合成气燃气轮机燃烧室燃烧及排放特性的影响研究[D].北京:中国科学院研究生院(工程热物理研究所),2016.
[6] 邵卫卫,胡玉婷,黄明明,等.天然气柔和燃烧锅炉结构参数影响模拟研究[J].热科学与技术,2015,14(02):161-171.
[7] 王翰林,雷福林,邵卫卫,等.合成气燃气轮机燃烧室CFD模拟的模型选择及优化[J].中国电机工程学报,2015,35(06):1429-1435.
[8] 黄明明.燃气轮机燃烧室柔和燃烧机理与性能研究[D].北京:中国科学院研究生院(工程热物理研究所),2014.
[9] 王朝晖,王成军,王丹丹,吴镇宇.燃气轮机燃烧室燃烧气体燃料的数值模拟[J].沈阳航空工业学院学报,2010,27(02):11-14.
[10] 郑洪涛,穆勇,李智明,等.湍流燃烧模型在燃气轮机燃烧室模拟中的运用与对比[J].热能动力工程,2010,25(01):12-16+117-118.
[11] 王成军,张宝诚.某重型燃气轮机燃烧室燃烧流动的数值模拟[J].机械设计与制造,2008(01):99-100.
[12] 程云勇.基于工业CT测量数据的空心涡轮叶片三维壁厚分析[D].西安:西北工业大学,2009.
[13] 丁勇能,杨帆,田勇,等.某重型燃气轮机一级动叶气热耦合数值模拟[J].燃气轮机技术,2017,30(3):32-36.