A component-based time-resolved particle image velocimetry system for unsteady fluid flow diagnostics

用于非稳态流体流动诊断的基于组件的时间分辨粒子图像测速系统

• 批准号: 389780-2010
• 负责人: Peterson, Sean
• 金额: $ 10.93万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=443014
• 关键词: component; based; time; resolved; particle

This proposal is for the purchase of a time-resolved particle image velocimetry (TRPIV) system. TRPIV is a velocity measurement technique for fluid mechanics that provides the velocity field within a defined measurement plane with adequate temporal resolution. The system consists of three primary components: (i) a high frame rate CMOS camera, (ii) a high repetition rate pulsed laser to provide illumination and define the measurement plane, and (iii) a data acquisition computer used to control and synchronize the camera and laser, acquire the camera images, and process the images to obtain the velocity field. The proposed system will be the keystone of a new unsteady and biological fluid mechanics laboratory being established at the University of Waterloo (UW) by Dr. Peterson. The inherently unsteady nature of biological fluid flows, such as the pulsatile blood flow produced by the heart, necessitates a measurement system capable of acquiring not only high spatial resolution full field data, but the temporal flow development. For example, it is well established that both spatial and temporal gradients of the wall shear stress have been implicated in cardiovascular disease initiation and progression. Specifically, the requested equipment will be used in the research program proposed in Dr. Peterson's concurrent Discovery Grant application, which focuses on the impact between coherent fluid structures (such as vortices produced in a pumping heart) and a deformable smart material strip towards energy harvesting to power micro-electronic devices and sensors. The fluid/structure interaction is inherently unsteady and spatially variant, thus requiring full-field measurement system with sufficient temporal resolution. The requested TRPIV system is vital for the establishment of a fully functional fluid mechanics research program at the forefront of experimental fluid science.

该提案旨在购买时间分辨粒子图像测速（TRPIV）系统。 TRPIV 是一种流体力学速度测量技术，可在定义的测量平面内提供具有足够时间分辨率的速度场。 该系统由三个主要组件组成：(i) 高帧率 CMOS 相机，(ii) 高重复率脉冲激光器，用于提供照明并定义测量平面，以及 (iii) 数据采集计算机，用于控制和同步相机和激光、采集相机图像并处理图像以获得速度场。 拟议的系统将成为 Peterson 博士在滑铁卢大学 (UW) 建立的新的非定常和生物流体力学实验室的基石。 生物流体流动（例如心脏产生的脉动血流）本质上不稳定，因此需要一个测量系统不仅能够获取高空间分辨率全场数据，而且能够获取时间流动发展。 例如，众所周知，壁剪切应力的空间和时间梯度都与心血管疾病的发生和进展有关。 具体来说，所需的设备将用于彼得森博士同时提出的发现补助金申请中提出的研究计划，该计划重点研究相干流体结构（例如泵血心脏中产生的涡流）和可变形智能材料条之间的影响，以收集能量为微电子设备和传感器供电。 流体/结构相互作用本质上是不稳定的且空间变化的，因此需要具有足够时间分辨率的全场测量系统。 所需的 TRPIV 系统对于在实验流体科学前沿建立功能齐全的流体力学研究项目至关重要。