Three-dimensional gradients of the hydroxyl radical (OH) concentration were measured in a premixed, lean natural gas / air flame by simultaneous laser induced fluorescence imaging (LIF) in a crossed-light-sheet confguration and one-dimensionally resolved Raman scattering. The technique is applied to measurements in a turbulent bluff-body flame with the aim to investigate correlations between species concentration gradients and local concentrations. PLIF平面激光誘導(dǎo)熒光火焰燃燒檢測系統(tǒng) 德國LaVision PIV/PLIF粒子成像測速場儀 Imager sCMOS PIV相機(jī)