曲面内壁喷嘴燃烧器中湍流喷雾火焰流场和液滴动力学

2018/02/05   下载量: 6

方案摘要

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应用领域 能源/新能源
检测样本 其他
检测项目
参考标准 暂无

采用德国LaVision公司的高速时间分辨立体激光成像测速系统PIV和相位多普勒干涉仪系统,对曲面内壁喷嘴燃烧器中湍流喷雾火焰流场和液滴动力学进行了测量和研究

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方案详情

A curved wall jet (CWJ) burner was employed to stabilize turbulent spray flames that utilize a Coanda effect; air is
supplied as an annular-inward jet over a curved surface, surrounding an axisymmetric solid cone fuel spray. Flow
velocity fields of the oxidizer and droplet size and velocity data were measured using Stereoscopic Particle Image
Velocimetery (SPIV) and a Phase Doppler Interferometer (PDI) system, respectively. SPIV measurements revealed
that the general features of the flow field exhibit typical flow characteristics of the CWJ burner. As the air flow rate
increases, the droplets size (D32) decreases upstream at off-center positions and becomes more uniform in the radial
direction. Moreover, the mean axial droplets velocity reduces in the near-field flow of flames.

上一篇 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
下一篇 多注入角度喷雾的实验和计算模拟研究

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