论文标题
自由流动液体平面喷水中的化学动力学成像
Imaging of chemical kinetics at the water-water interface in a free-flowing liquid flat-jet
论文作者
论文摘要
我们使用液体喷射技术提出了对两种水溶液之间界面之间界面处的Luminol氧化化学发光反应的化学动力学测量。自由流动的iQuid微射流是一个相对较新的发展，它已经进入了越来越多的光谱和动力学应用中。当液体的两个圆柱喷射液时，可以获得其称为平射流的变体，从而导致流动液体的平面叶状结构链。我们在这里表明，在该链的第一片叶子中，流体不会表现出湍流混合，从而在撞击喷气机的液体之间提供了干净的界面。我们还使用Luminol化学发光反应的示例来表明，该设置如何用于从无摩擦流中获取动力学信息，并通过规避快速混合的需求，但要故意抑制所有湍流混合并依靠扩散。
We present chemical kinetics measurements of the luminol oxydation chemiluminescence reaction at the interface between two aqueous solutions, using liquid jet technology. Free-flowing iquid microjets are a relatively recent development that has found its way into a growing number of applications in spectroscopy and dynamics. A variant thereof, called flat-jet, is obtained when two cylindrical jets of a liquid are crossed, leading to a chain of planar leaf-shaped structures of the flowing liquid. We here show that in the first leaf of this chain the fluids do not exhibit turbulent mixing, providing a clean interface between the liquids from the impinging jets. We also show, using the example of the luminol chemiluminescence reaction, how this setup can be used to obtain kinetics information from friction-less flow and by circumventing the requirement for rapid mixing but by intentionally suppressing all turbulent mixing and instead relying on diffusion.
