方案摘要
方案下载应用领域 | 能源/新能源 |
检测样本 | 煤炭 |
检测项目 | |
参考标准 | 暂无 |
采用LaVision公司的ImagerProX相机构成一套PIV和PLIF联合测量装置,并利用该装置进行了氢-空气湍流贫预混低旋流射流火焰直接燃烧噪声特性的研究。
Hydrogen-air turbulent lean premixed flames in a low swirl burner are investigated to explore the effect of flame structures on spectral characteristics of direct combustion noise using simultaneous 10 kHz OH-PLIF and sound pressure measurements, as well as PIV-only measurements. The bulk velocities of premixed hydrogen-air mixture at the burner exit plane, V, are 15 and 25 m/s, while an overall equivalence ratio is fixed at 0.45. Direct combustion noise spectra reveal that, with increasing V, pressure of characteristic peaks increases and peak frequencies shift to high-frequency side. Local spectral analyses in OH-PLIF images at V = 15 m/s show a pronounced peak at a frequency corresponding to that in noise spectra, although this trend is not observed for V = 25 m/s. This suggests spectral characteristics of combustion noise are affected by flame structures differently, depending on V.
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
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