Effects of Turbulence Structure on the Cavitation of Turbomachinery

第一阶段小企业创新研究奖是为了 分析和实验工作的技术，以确定 悬浮在空气中的单个气泡的大小和形状 从测量的光的相位变化的液体 从不同的角度从一个气泡中散开。 的 分析将基于散射的几何光学 从球状气泡。 实验将试图验证 分析预测，并验证推导的气泡 尺寸和长宽比与高 快速摄影 一种用于快速表征气泡尺寸、形状 速度和浓度可以用来研究 汽液两相汽蚀 接触装置如发酵罐和浮选池。

This Phase I Small Business Innovative Research Award is for analytical and experimental work on a technique to determine the size and shape of individual gas bubbles suspended in liquids from the measured variation in phase for light scattered at different angles from a single bubble. The analysis will be based on geometrical optics for scattering from spheroidal bubbles. Experiments will attempt to verify the analytical predictions and to validate the deduced bubble size and aspect ratio by comparison with measurement by high speed photography. An instrument for rapidly characterizing bubble sizes, shapes, velocities, and concentrations would find use in studying cavitation in turbomachinery as well as in gas-liquid contacting devices such as fermentors and flotation ponds.