Simultaneous dual-plane stereoscopic particle-imaging velocimetry (DS-PIV) and hydroxyl planar laser-induced fluorescence (OH-PLIF) was performed at 10 kHz repetition rate in a highly turbulent swirling jet flame. The burst-mode laser system provides sufficient 532-nm dual-pulse energy enabling high-speed large-area dual-plane stereo-PIV measurement. The scattered light from the two planes was separated onto respective cameras using orthogonal polarizations. A diode-pumped solid-state Nd: YAG/dye laser system produced the narrowband excitation 283-nm beam for the 10-kHz OH-PLIF imaging. The combined diagnostics produced simultaneous, temporally resolved two-dimensional fields of OH and two-dimensional, three-component velocity fields, facilitating the observation of the interaction of fluid dynamics with flame fronts.

中文翻译：

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10 kHz 同时双平面立体 PIV 和 OH-PLIF 成像

同时双平面立体粒子成像测速 (DS-PIV) 和羟基平面激光诱导荧光 (OH-PLIF) 在高度湍流的旋流喷射火焰中以 10 kHz 的重复率进行。突发模式激光系统提供足够的 532 nm 双脉冲能量，可实现高速大面积双平面立体 PIV 测量。来自两个平面的散射光使用正交偏振被分离到各自的相机上。二极管泵浦固态 Nd: YAG/染料激光系统产生窄带激发 283 nm 光束，用于 10 kHz OH-PLIF 成像。组合诊断产生同步的、时间分辨的二维 OH 场和二维、三分量速度场，有助于观察流体动力学与火焰前沿的相互作用。