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

阐明聚合物引起的弹性惯性湍流 (EIT) 的发生和性质及其对制造的影响

• 批准号: 2437322
• 金额: --
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2437322
• 关键词: Elucidating; onset; nature; elasto; inertia

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

我的研究计划包括研究聚合物如何影响流动特性。更准确地说，在低雷诺数下，流动表现出被描述为弹性湍流的特殊特性。这些不稳定性是由聚合物与流体相互作用产生的，是由在没有惯性的情况下的弹性应力引起的，对此我们知之甚少。由于缺乏现场实验数据，项目期间将在泰勒-库埃特流配置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惯性湍流的本质。实验将在各种粘弹性的流体中进行，以更好地理解宏观和微观层面上这些现象的本质。该项目的目的是建立当前标准并利用弹性惯性来增强运输现象