A high-resolution PIV-LIF flow visualisation system for environmental fluid dynamics

在五大湖和沿海海洋的水域内，湍急的混合和平流过程决定了化学品、生物群、沉积物和污染物的扩散。我的研究计划的目标是开发这些物理传输过程的简明数学模型。这里需要的设备，粒子成像测速仪(PIV)和激光诱导荧光(LIF)流动可视化系统，将用于在环境流动的实验室研究中研究湍流和涡流动力学。使用PIV-LIF流动可视化系统进行的高分辨率测量将使我和我的学生能够量化和测试流动中受垂直密度分层和地球自转强烈影响的化学品、沉积物、热量和营养物质的湍流混合和扩散的数学模型。了解这种溶解物质是如何运输和分散的，对于为解决目前加拿大内陆和沿海水域的污染问题制定经济和环境解决办法至关重要。

Within the waters of the Great Lakes and the coastal ocean, turbulent mixing and advective processes determine the dispersion of chemicals, biota, sediments and contaminants.  The goal of my research program is to develop concise mathematical models of these physical transport processes. The equipment requested here, a Particle Imaging Velocimetry (PIV) and Laser Induced Fluorescence (LIF) flow visualisation system, will be used to investigate turbulence and vortex dynamics in laboratory studies of environmental flows. The high resolution measurements made with the PIV-LIF flow visualisation system will allow my students and I to quantify and test mathematical models of turbulent mixing and dispersion of chemicals, sediment, heat and nutrients within the flows that are strongly influenced by vertical density stratification, and the Earth's rotation. Understanding how such dissolved matter is transported and dispersed is essential in order to develop economic and environmental solutions to current pollution problems in the inland and coastal waters of Canada.