Particle Image Velocimetry System

粒子图像测速系统

• 批准号: RTI-2023-00508
• 负责人: Sumner, David
• 金额: $ 10.93万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=760289
• 关键词: Particle; Image; Velocimetry; System

Funding is requested for a new particle image velocimetry (PIV) system that will be shared by researchers in mechanical and civil engineering in the wind tunnel and hydraulics laboratories at the University of Saskatchewan. PIV is a de facto laboratory standard for making air and water velocity measurements in complex three-dimensional turbulent flows. When PIV is used in a wind tunnel, the airflow is uniformly seeded with small droplets, the flow and droplets are illuminated with a laser light sheet, and the flow is imaged with a digital camera. PIV software then computes the fine details of the fluid motion at thousands of points within a plane in the flow field at one instant in time. Ultimately, PIV provides researchers with a time sequence of velocity fields within a plane in a flow. The high spatial resolution of the measurements allows researchers to study the fine details of the fluid motion. In the case of flow in a water channel, the PIV technique is the same, but the flow is uniformly seeded with small spherical particles instead of droplets. Engineering graduate students supervised by the applicants are trained on the use of PIV and employ this instrumentation in their research. Our research programs in the fields of fluid mechanics, aerodynamics, and hydraulics are helping to solve problems in the areas of aviation, agriculture, protection of water quality, and public safety. The research outcomes will impact efforts to reduce energy consumption and emissions in the aviation industry, reduce energy use and improve crop yields in large-scale agricultural applications, improve the design of storm water retention ponds to reduce impacts of pollution on our waterways, and improve public safety at dams. We note that energy, agriculture, and water security are key areas for Canada's future prosperity. The new PIV system will replace our aging PIV system (more than 20 years old) that is close to the end of its useful life, can no longer be upgraded, and for which there is no longer any technical support or maintenance services available from the manufacturer. Our laser is currently operating at only 60% of its rated power, despite replacing some of its key components, and this severely limits the types of measurements we are able to make. Our aging PIV system is heavily used and there are no similar systems at our university nor, to our knowledge, actively being used in our entire province. There is an immediate need for funds to purchase a new PIV system so as not to delay or disrupt the research and degree programs of our current graduate students, in the event that additional components of our aging system lose additional power or fail to operate. PIV is also a key component of our training program for our graduate students, as they prepare to enter the engineering workforce or begin careers in research.

要求资助新的粒子图像速度法（PIV）系统，该系统将由萨斯喀彻温大学的风洞和液压实验室的机械和土木工程研究人员共享。 PIV是事实上的实验室标准，用于在复杂的三维湍流中进行空气和水速度测量。当在风洞中使用PIV时，气流均匀地播种，用小滴，流量和液滴用激光灯片照亮，并用数码相机对流程进行成像。然后，PIV软件在一次瞬间的流场中的平面内数千点计算出流体运动的精细细节。最终，PIV为研究人员提供了流动中平面内速度场的时间顺序。测量值的高空间分辨率使研究人员可以研究流体运动的细节。在水通道中的流动中，PIV技术是相同的，但是流动用小的球形颗粒而不是液滴均匀地种子。受申请人监督的工程研究生接受了使用PIV的培训，并在其研究中使用了该仪器。我们在流体力学，空气动力学和液压领域的研究计划正在帮助解决航空，农业，保护水质和公共安全领域的问题。研究成果将影响减少航空业能源消耗和排放的努力，减少能源利用并提高大规模农业应用中的作物产量，改善雨水保留池的设计，以减少污染对水道的影响，并改善大坝的公共安全。我们注意到，能源，农业和水安全是加拿大未来繁荣的关键领域。新的PIV系统将取代我们的老化PIV系统（已有20多年的历史），该系统已接近其使用寿命的尽头，无法再升级，并且不再提供制造商提供的任何技术支持或维护服务。尽管取代了其一些关键组件，但我们的激光器目前仅以其额定功率的60％运行，这严重限制了我们能够进行的测量类型。我们的老化PIV系统已被大量使用，据我们所知，我们的大学也没有类似的系统。如果我们的老化系统的其他组件失去额外的功能或无法运作，则立即需要资金购买新的PIV系统，以免延迟或破坏当前研究生的研究和学位课程。 PIV也是我们研究生培训计划的关键组成部分，因为他们准备进入工程劳动力或开始研究职业。