Studies of Scalar Mixing in Curved, Two-Dimensional, Turbulent Mixing Layers Using Laser Induced Fluorescence and Volume Rendering

利用激光诱导荧光(LIF)技术对弯曲二维湍流混合层中的流动结构和组分浓度进行了实验分析。来自多个平面光片的数据将被组合以构建整个流场的全局视图。通过测量荧光染料混合分数的概率密度函数，可以推断出分子水平上的混合。将利用同时具有稳定和失稳曲率效应的流动构型。曲率是增强或降低两个流动气流之间的混合效率的手段之一，与燃烧和燃料系统以及化学过程相关。

Laser Induced Fluorescence (LIF) will be used to experimentally analyze flow structures and species concentration in a curved two-dimensional turbulent mixing layer. Data from multiple planar light sheets will be combined to construct a global view of the entire flow field. Mixing at the molecular level will be inferred from measurements of the probability density function of mixture fraction of fluorescence dye. Flow configurations with both stabilizing and destability curvature effects will be utilized. Curvature is one means for enhancing or reducing the mixing effectiveness between two flowing streams, with relevance to combustion and fuel systems as well as chemical processes.