Engineering Research Equipment: Particle Image Velocimetry System

爱荷华大学的爱荷华州立水力研究所将购买一个粒子图像测速（PIV）系统，该系统将专门用于支持流体力学和水力工程的研究。PIV系统将用于以下研究项目：(1)研究柱状涡是一个刀片的切割和涡的后续反应,其中包括传播旅游离叶片涡破裂,(2)一项研究的二次涡结构形式的核心区域动荡的皮层,(3)的研究动态和混乱的漩涡的分手稳定分层quasi-geostrophic流和(4)的一项研究涡旋形成的液压进气系统。除了这些具体的研究项目外，PIV系统还将通过对流体流动的半全局测量来增强一般研究能力，这将为目前使用的单点测量仪器提供补充。＊＊＊

ABSTRACT Jeffrey Marshall CTS-9410075 The Iowa State Institute of Hydraulic Research at the University of Iowa will purchase a Particle Image Velocimetry (PIV) system, which will be dedicated to support research in fluid mechanics and hydraulic engineering. The PIV system will be used for the following research project: (1) a study of the cutting of a columnar vortex be a blade and the subsequent response of the vortex, which includes propagation of a traveling vortex breakdown away from the blade, (2) a study of the secondary vortex structure which forms about the core region of a turbulent cortex, (3) a study of the dynamics and chaotic breakup of vortices in stably stratified quasi-geostrophic flows and (4) a study of the formation of vortices in hydraulic intake systems. In addition to these specific research projects, the PIV system will enhance the general research capabilities with a semi-global measurement of fluid flows, which will provide a complement to the single-point measurement instrumentation presently in use. ***