Particle Image Velocimetry Measurements Using Refractive Index Matching in a Heat Exchanger

随着混合动力和电动车辆的引入，对当前一代消费者车辆内的冷却系统提出了更高的要求。因此，可用于设计和测试这些紧凑型热交换器中的新传热增强表面的时间和预算较少。开发过程在很大程度上依赖于使用计算流体动力学（CFD）等工具对其性能进行数值建模的能力。达纳加拿大公司目前正在寻求验证他们的数值分析结果的一个新的热交换器设计与实验速度测量。然而，由于装置中流动的小尺度性质，再加上所得流场的复杂性，没有实验数据来验证数值结果。因此，所提出的研究的主要目标是使用粒子图像测速（PIV）测量，以提供验证数据和洞察到一个紧凑的热交换器流场的物理。

With the introduction of hybrid and electric vehicles, larger demands have been placed on the cooling systems in place within the current generation of consumer vehicles. As a result, there is less time and budget available for the design and testing of new heat transfer enhancement surfaces in these compact heat exchangers. The development process relies heavily on the ability to numerically model their performance using tools such as Computational Fluid Dynamics (CFD). Dana Canada Corporation is currently seeking to validate the results of their numerical analysis on a new heat exchanger design with experimental velocity measurements. However, due to the small scale nature of the flow in the device, coupled with the complexity of the resulting flow field, there exists no experimental data to validate the numerical results with. Therefore, the main objective of the proposed research is to use Particle Image Velocimetry (PIV) measurements to provide validation data and insight into the physics of a compact heat-exchanger flow field.