Engineering Creativity Award: Laser Induced Breakup or & Atomization of Small Liquid Jets

流体流的雾化要求流体流快速破碎， 产生小液滴的喷雾。 目前的方法产生随机的 液滴大小的分布。 这项研究计划的目的是 是从理论上研究并确定 激光驱动雾化器。 雾化器应能够产生 可控的平均液滴尺寸和窄的尺寸分布。 高频射流特性的理论研究， 周期性地施加侧力或轴对称力。 这项研究的结果将确定激光脉冲速率， 原子化所需的辐射压力和接触面积 给定流体流动。 水、碳氢化合物（汽油）和各种点 将被评估。 激光与流体射流相互作用的研究 将限定适当的激光束所需的激光束波长 能量耦合到流体和手段，以获得 适当的脉冲开关频率。 激光致动雾化器将 并对其性能进行了实验分析。 实验室 由激光致动雾化器形成的液滴 将通过高速摄影或激光进行分析 视觉化

Atomization of fluid flow requires that fluid flow breakup quickly and produce a spray of small droplets. Present methods produce a random distribution of droplet sizes. The objective of this research program is to theoretically investigate and to determine the feasibility of a laser actuated atomizer. The atomizer should be capable of producing a controllable mean droplet size and a narrow size distribution. A theoretical study of the behavior of a jet with a high frequency, periodically applied side, or axisymmetric force will be undertaken. The results of this study will determine the laser pulse rate, radiation pressure and contact area required for atomization of a given fluid flow. Water, hydrocarbons (gasoline) and variouis points will be evaluated. Study of the laser interactions with fluid jets would define the wavelength of the laser beam required for proper energy coupling to the fluid and the means by which to obtain the proper pulse switching frequency. The laser actuated atomizer would be constructed and an experimental analysis of its performance made in the laboratory. The droplets formed by the laser actuated atomizer would be analyzed either by high speed photography or laser vizualization.