Elucidating the onset and nature of elasto-inertia turbulence (EIT) induced by polymers and its implications for manufacturing

我的研究计划是通过研究聚合物如何影响流动的性质来完成的。更准确地说，在低雷诺数时，流动表现出被描述为弹性湍流的特殊性质。这些不稳定是由聚合物与流体的相互作用产生的，是由缺乏惯性的弹性应力引起的，人们对此知之甚少。由于缺乏现场实验数据，本项目将在Taylor-Couette流型中使用粒子图像测速(PIV)和激光诱导荧光(LIF)等实验技术来阐明弹性惯性湍流的本质。实验将在不同粘弹性的流体中进行，以更好地从宏观和微观层面理解这些现象的本质。该项目的目的是建立目前的标准，并利用弹性惯性来加强运输现象。

My research proposal is consisted by the investigation of how the polymers affect the properties of the flow. More precisely, at low Reynolds numbers, the flow exhibits peculiar properties described as elastic turbulence. These instabilities, generated by the interaction of polymers with the fluid, are induced by elastic stresses in absence of inertia that are poorly understood. Due to the lack of experimental data in the field, during the project experimental techniques will be used, such as Particle Image Velocimetry (PIV) and Laser Induced Fluorescence (LIF), in a Taylor-Couette flow configuration to elucidate the nature of elasto-inertia turbulence. The experiments will be conducted in fluids of various viscoelasticities to better comprehend the nature of these phenomena in macroscale and microscale level. The aim of the project is to establish the current criteria and to exploit elasto-inertia to enhance transport phenomena