论文标题
高速化阴影学用于研究高速气流中的滴分裂
High-magnification shadowgraphy for the study of drop breakup in a high-speed gas flow
论文作者
论文摘要
直接观察高速气流中的液滴分解过程是一个关键的挑战，需要解决，以阐明碎片现象的物理机制。在这里，我们提出了一种高磁化和高速阴影码头技术，该技术允许在整个演变中可视化此过程，并解决分解区的详细特征。开发的实验方法使用配备长距离显微镜的高速摄像头。背光照明源是由染料溶液的激光诱导的荧光提供的，该染料溶液以高重复速率提供短脉冲。因此，由激光相干性产生的伪像降低了。
Direct observation of the droplet breakup process in high-speed gas flows is a critical challenge that needs to be addressed to elucidate the physical mechanisms underlying the fragmentation phenomenon. Here, we present a high-magnification and high-speed shadowdograph technique that allows the visualization of this process over its whole evolution and resolves detailed features of the breakup zone. The developed experimental method uses a high-speed camera equipped with a long-distance microscope. The backlight illumination source is provided by the laser-induced fluorescence of a dye solution that delivers short pulses at a high-repetition rate. Artefacts resulting from the laser coherence are therefore reduced.
