Research Initiation Award: Investigation of Viscoelastic Flow Instabilities by Digital Particle Image Velocimetry

该研究启动奖将启动一个 实验计划，使定量评估的 一个复杂的二维运动场 粘弹性流动 一种基于视频的粒子跟踪技术 称为数字粒子图像测速法 采用高分辨率单色CCD摄像机， 数字信号处理算法，以消除 耗时的摄影和光学机械步骤 与传统的粒子成像方法相关。 该装置将用于详细研究流动 不稳定性，发展过程中缓慢流动的高度 粘弹性材料通过模型几何形状， 典型的工业过程。

This Research Initiation Award will initiate development of an experimental program to enable quantitative evaluation of the full, two-dimensional kinematic fields within a complex viscoelastic flow. A video-based particle-tracking technique referred to as Digital Particle Image Velocimetry is used which employs high resolution monochrome CCD cameras and fast digital signal processing algorithms to eliminate the time-consuming photographic and optomechanical steps associated with conventional particle-imaging methodologies. The apparatus will be used in detailed studies of the flow instabilities that develop during the slow flow of highly viscoelastic materials through model geometries that are characteristic of typical industrial processes.