方案摘要
方案下载应用领域 | 能源/新能源 |
检测样本 | 天然气/燃气 |
检测项目 | |
参考标准 | 暂无 |
采用LaVision公司的HSS5型高速相机构成时间分辨OH-PLIF测量系统并总结了非介入式诊断技术的原理及其在燃气轮机燃烧室燃烧不稳定性基础研究中的应用。
Combustion instabilities are often manifested in modern fuel-lean gas turbine combustors. Investigating the mechanisms and developing control strategies for combustion instabilities in such systems are of practical importance and give rise to interesting scientific issues as large-amplitude pressure and heat release perturbations can lead to catastrophic and irreversible consequences on costly gas turbine hardware. In recent years, tremendous efforts have been made to achieve a deeper understanding of the periodic combustion oscillations in gas turbine engines with both advanced numerical simulations and experimental diagnostics. In the latter case, state-of-the-art, non-intrusive diagnostic techniques have been well adopted to conduct fundamental studies on combustion instabilities in gas turbine model combustors. For example, simultaneous time-resolved measurements with planar laser-induced fluorescence (PLIF) for characterizing flame structure and particle image velocimetry (PIV) for imaging flow field significantly contribute to the understanding of the role of flame–flow–acoustics coupling in the events of combustion instabilities, and to the development and validation of advanced numerical models. However, planar measurements can be restrictive when flames are not axisymmetric or exhibit complex large-scale three-dimensional (3D) dynamics, which are commonly encountered in practical combustion system when combustion instabilities occur. Therefore, more recently, new volumetric imaging techniques for combustion diagnostics have attracted considerable research efforts. This paper categorizes different advanced non-intrusive combustion diagnostic techniques, including their basic principles and especially applications for the study of combustion instability. Some of the recent progresses in the diagnostic techniques, such as computed tomography of chemiluminescence (CTC), volumetric laser induced fluorescence (VLIF), rainbow-PIV, etc., are also discussed. These volumetric combustion diagnostic techniques offer the advantage to measure both spatial and temporal characteristics of the flame/flow of interest, which will enable deeper insights into the nature of unsteady combustion in the future. This brief review is intended to be useful for both researchers and engineers to design and conduct further fundamental experiments on combustion instabilities in gas turbine engines.
在一个双稳湍流涡旋火焰中,对间歇性动态的时间-频率定位
Particle-laden Taylor-Couette流:高阶转变和径向局部波浪涡旋的证据
7根杆束的流体-结构相互作用:用实验数据对比数值模拟
相关产品
汽车光学检测系统AIS
PT403型波长可调谐皮秒激光器
ANL系列高能量高重复频率DPSS纳秒激光器
APL4206 系列高能量皮秒激光放大器
UltraFlux FF/FT 5000 高能量可调谐飞秒激光器系统
UltraFlux FT300型波长可调谐飞秒激光器系统
Ekspla 超高功率激光器系统SYLOS 2A
LaVision PTUx 可编程时间控制单元
LaVision 用于粒子成像测速PIV的相机
LaVision StrainMaser 全场应变测试系统组件
LaVision 用于数字图像相关DIC的相机
LaVision StrainMaster 数字图像相关分析软件包
LaVision 标定板
LaVision StrainMaster 形变应变成像测量系统
LaVision StrainMaster DVC 体视全场应变测量系统
关注
拨打电话
留言咨询