本文已被：浏览 556次 下载 361次
中文摘要: 为获得燃烧室头部几何参数对火焰形状及火焰传递函数的作用机制，并预判不同结构下燃烧不稳定 发生风险。基于大涡模拟，对控制燃烧室头部形状的四个参数进行了 DoE试验设计研究，并通过激励响应法 从大涡模拟中辨识了火焰传递函数。结果表明，上述四个参数对A型火焰影响小，C型火焰主要受扩张角影 响，B型火焰主要受扩张角与燃烧室半径相互作用影响。火焰传递函数结果表明火焰仅对低频段响应明显。 工况5，7和8仅有一 100 Hz以下频率带;工况9,14和15仅有一 200 Hz以上频率带;其它工况响应频率带有 2个以上。燃烧室设计中应规避高火焰传递函数增益的结构设计，以降低燃烧不稳定风险。
Abstract:To explore the effects of combustor dome structures on flame shapes and flame transfer functions, and to estimate combustion
instability risks under different dome geometries, the DoE method based on large eddy simulations was performed on four critical
geometric parameters of the combustor dome. Flame transfer functions were identified from large eddy simulation results via the frequency response technique. Results indicated that type-A fames were not influenced by any parameters, type-C flames were controlled by the diffusor angle and type-B flames were influenced by the interactions between the diffusor angle and combustor radius.
The flames only responded to low frequency bands. Case 5, 7 and 8 only had a frequency band below 100 Hz, while case 9, 14 and 15 only possessed a frequency band above 200 Hz. More than two frequency bands were found in other cases. High gains of flame transfer functions need be avoided to reduce the risk of combustion instabilities at the design stage of combustors
keywords: premixed combustor large eddy simulation flame transfer function DoE design of experiments combustor
dome structure
文章编号： 中图分类号：TK472 文献标志码：
基金项目:
| 作者 | 单位 |
| 杨旸 | 中国科学院工程热物理研究所南京未来能源系统研究院；中国科学院工程热物理研究所先进燃气轮机实验室；中国科学院大学 |
| 余志健 | 中国科学院工程热物理研究所南京未来能源系统研究院；中国科学院工程热物理研究所先进燃气轮机实验室；中国科学院大学 |
引用文本：
作者.题名[J].刊名,出版年份,卷号(期号):起止页码.
[2]KIM K M, PARK J S, DONG H L, et al. Analysis of conjugated heat transfer, stress and failure in a gas turbine blade with circular cooling passages[J]. Engineering Failure Analysis, 2011, 18(4):1212-1222.
作者.题名[J].刊名,出版年份,卷号(期号):起止页码.
[2]KIM K M, PARK J S, DONG H L, et al. Analysis of conjugated heat transfer, stress and failure in a gas turbine blade with circular cooling passages[J]. Engineering Failure Analysis, 2011, 18(4):1212-1222.