湍流火焰中利用同时进行的激光诱导荧光和拉曼散射方法测量OH浓度的三维梯度

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.