Research Initiation Award: The Effects of Turbulence on the Drag and Evaporation Rate of Liquid Droplets

一项实验研究，以调查之间的相互作用 液滴和相当大小的湍流气体漩涡， 提出了 测量液滴直径、速度和 湍流气流中的加速度将使用 频闪阴影摄影。 湍流气流将 在风洞中用湍流产生网格产生。 激光多普勒测速仪将用于表征气体 急流. 质量和动量传递数据， 系数和蒸发率将获得在 真实的液滴雷诺数范围（1到500） 喷雾剂 研究结果将有助于更好地理解液滴 传输过程，应用于模拟喷雾， 燃烧室

An experimental study to investigate the interaction between droplets and comparable sized turbulent gas vortices is proposed. Measurements of droplet diameters, velocities, and accelerations in a turbulent air stream will be made using strobed shadow photography. The turbulent air flow will be generated in a wind tunnel with turbulence generating grids. Laser Doppler velocimetry will be used to characterize the gas turbulence. Data on the mass and momentum transfer, drop drag coefficients and evaporation rates will be obtained in the range of droplet Reynolds numbers (1 to 500) seen in real sprays. The results will be useful for better understanding droplet transport processes, with application to modeling sprays in combustion chambers.