Experiments in complex fluids for industrial flow systems

工业流动系统的复杂流体实验

• 批准号: RGPIN-2020-03896
• 负责人: Fleck, Brian
• 金额: $ 2.84万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=739544
• 关键词: Experiments; complex; fluids; industrial; flow

This program maintains continuity with my ongoing long term objective to provide practical experimental solutions and well trained engineers and scientists for complex multiphase fluid dynamics problems of interest to the Canadian economy in industries related to resource extraction and energy production. During the proposed five year program, my short term goal is to continue to enhance knowledge and innovation using my experimental platforms. I will continue to characterise bubbly duct flow which is of direct application to industrial effervescent atomization, explore more drag reduction modalities using my unique Taylor-Couette complex fluid testing rig and I will add an innovative long aspect ratio flow rig for understanding flow geometries applicable to underground drilling. These results will be novel, relevant with both fundamental and applied value. I will use fluids which include shear thinning polymers, liquid-solid suspensions, liquid-liquid colloids and liquid-surfactant solutions. They will be tested to understand the bulk engineering behaviour as well as detailed instantaneous velocity, Reynolds stresses and turbulent fluid structures. The experiments will be performed using laser and optical diagnostic tools such as phase Doppler particle anemometry (PDPA or PDA), laser Doppler anemometry (LDA), particle image velocimetry and high speed photography and image processing. The well controlled experiments will provide a wealth of exciting and interesting novel results. These results will be useful for fundamental understanding of complex fluids in turbulent flows and will be immediately useful in Canada's energy industry which regularly requires detailed understanding of multiphase and non-Newtonian physics. This will be applicable to drilling, hydrodynamic fracking, slurry transport and wear and waste fluid handling. In this proposed program I follow lines of previous success with experiments on drag reducing polymers and multiphase mixtures to cover fluids with even greater physical complexity. Then I will investigate psuedoplastic yield power law fluids with emphasis on understanding the turbulent stresses in the near wall region and how complex stress-strain relationships affect flow structure and form. The outcomes will be 1) Parametric mapping of flow regimes for bubbly injection in crossflow with focus on the effect of non-Newtonian fluids. 2) Turbulent drag characterization in yield power law fluids additives and suspended particles typical in industrial flows; testing of fluids with rheology dependent on control parameters such as temperature 3) fabrication of a unique long aspect ratio flow rig to fully explore qualitative and quantitative flow regimes in vertical, horizontal and tilted concentric cylinder geometry with both rotation and co-flow. Experiments will all be informed by my industry collaborations and be shared in journals and engineering reports. This program will have both fundamental and applied value.

该计划与我正在进行的长期目标保持连续性，为资源开采和能源生产相关行业中加拿大经济感兴趣的复杂多相流体动力学问题提供实用的实验解决方案和训练有素的工程师和科学家。在拟议的五年计划中，我的短期目标是继续利用我的实验平台提高知识和创新。我将继续研究气泡管道流，这是直接应用于工业雾化，探索更多的减阻模式，使用我独特的泰勒-库埃特复杂的流体试验台，我将增加一个创新的长纵横比流动试验台，以了解适用于地下钻井的流动几何形状。这些结果是新颖的，具有重要的理论意义和应用价值。我将使用的流体包括剪切稀化聚合物、液-固悬浮液、液-液胶体和液-表面活性剂溶液。他们将进行测试，以了解散装工程行为以及详细的瞬时速度，雷诺应力和湍流结构。 实验将使用激光和光学诊断工具进行，如相位多普勒粒子风速仪（PDPA或PDA），激光多普勒风速仪（LDA），粒子图像测速仪和高速摄影和图像处理。控制良好的实验将提供丰富的令人兴奋和有趣的新结果。这些结果将是有用的复杂流体的湍流的基本理解，并将立即在加拿大的能源行业，定期需要详细了解多相和非牛顿物理有用。这将适用于钻井、水力压裂、泥浆运输以及磨损和废液处理。 在这个建议的计划中，我遵循以前成功的减阻聚合物和多相混合物的实验，以涵盖更大的物理复杂性的流体。然后，我将研究伪塑性屈服幂律流体，重点是了解近壁区域的湍流应力，以及复杂的应力-应变关系如何影响流动结构和形式。 结果将是1）参数映射的流动状态的泡状注入在横流，重点是非牛顿流体的影响。2)幂律流体中的湍流阻力特性工业流体中的典型添加剂和悬浮颗粒;测试流体的流变性取决于控制参数，如温度3）制造独特的长纵横比流动试验台，以充分探索垂直，水平和倾斜同心圆柱几何形状中的定性和定量流动状态，同时旋转和共流。所有实验都将由我的行业合作提供信息，并在期刊和工程报告中分享。该方案具有一定的理论意义和应用价值。