双旋流器燃烧室NO<sub>x</sub>生成研究

党新宪; 赵坚行; 吉洪湖

双旋流器燃烧室NO_x生成研究

南京航空航天大学能源与动力学院, 南京 210016

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出版历程
- 收稿日期: 2007-02-12
- 修回日期: 2007-07-20
- 刊出日期: 2008-03-28

A study on NO_X formation for double swirler combustor

College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

摘要

摘要: 通过试验和数值模拟方法研究不同进口油气比与温度以及主燃孔布局变化对双旋流模型燃烧室两相燃烧整体流场、出口温度丁以及污染物NO_x排放的影响.采用二维粒子图像测速仪(PIV)测量燃烧室内热态流场,用多点温度耙和取样管测量燃烧室出口温度T与NOx在非结构网格体系下,采用Fluent商业软件对燃烧室三维两相燃烧流场和NO_x分布进行计算.计算结果与试验数据符合较好,表明不同油气比、进气温度和主燃孔布局变化对模型燃烧室两相燃烧整体流场、出口温度T与NO_x排放都有一定的影响,并随着油气比与进气温度增加,燃烧室出口温度T与NO_x排放也相应地提高.
- 航空、航天推进系统 /
- 数值模拟 /
- 燃烧室 /
- 双旋流器 /
- 燃烧测量 /
- 污染物生成
Abstract: The influences of various fuel-air ratio,inlet temperature and geometric parameters on two-phase combustion integrated flow fields and pollutant NO_x formation in a model gas turbine combustor with a double swirler were investigated experimentally and numerically.Particle image velocimetry(PIV) technique was adopted to measure Profiles of velocity vector of primary combustion zone in model combustor.Multiple-point probes were used to measure radial distributions of outlet temperature and NO_x emission.Fluent commercial software was applied to simulate three-dimensional two-phase combustion flows and pollutant NO_x formation on unstructured grid system in the model combustor.The calculated results were consistent with the test data,showing that the influences of different fuel-air ratio,inlet temperature and primary holes parameters on two-phase flow fields as well as profiles of outlet gas temperature and NO_x are considerable.The outlet gas temperature and NO_x increase with fuel-air ratio and inlet temperature.
- aerospace propulsion system /
- numerical simulation /
- combustor /
- double swirler /
- combustion measurement /
- pollutant formation

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参考文献(7)

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