Laser Doppler Anemometry to Study Multiphase Flow and Phase Change

激光多普勒风速仪研究多相流和相变

• 批准号: RTI-2017-00170
• 负责人: Pope, Kevin
• 金额: $ 10.93万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=616579
• 关键词: Laser; Doppler; Anemometry; Study; Multiphase

The Research Tools and Instruments grant is requested to purchase a Laser Doppler Anemometry (LDA) system for Memorial University. LDA uses the Doppler Effect to provide precise measurements of fluid dynamics and fluid-solid interaction. Faculty growth has created a major expansion in thermo-fluid research at Memorial University and the proposed equipment is critical for the applicants to properly conduct their research programs. Primary focuses of the applicants are to investigate flow physics in multiphase flow, phase change / separation, and aerodynamics. The research provides significant benefits to several activities, including pipelines, oil extraction, Arctic and Subarctic vessels / structures, fluidized beds, thermochemical cycles, slurry transport, and power generation, among many others. Outcomes of the research will have industrial relevance and benefits to the economy of Newfoundland and Labrador (NL), and Canada. The outcomes from this research will improve oil and gas extraction in Arctic and Subarctic regions. For multiphase internal flow, Memorial University is equipped with a large scale (3 inch diameter) multiphase flow loop and a small scale loop that has significant operability is nearly complete. The new flow loop is designed to research phase separation, phase change insulation and flow assurance, among others. The aim of the research is to improve long distance transport of hydrocarbons by reducing pumping requirements and limiting oversized equipment, as well as ensuring safe disposal of treated water and limiting spills / leaks. The research team is investigating the combined physics of aerodynamics, phase change and external multiphase flow to enhance wind turbine performance in northern coastal locations and improve marine vessel safety in Subarctic regions. A climatic wind chamber with salt water spay and supercooling capabilities is nearly complete at Memorial University. The high quantities of water droplet impingement and ice accretion will be studied experimentally to improve predictive models and mitigation strategies for ice accretion. LDA a crucial measurement device to properly study the physical differences of salt and fresh water freezing by providing precise localized measurements for correlation development and model validation. The new LDA system will provide high quality and non-intrusive measurement for several researchers in a wide-variety of research projects. LDA offers important capabilities to the research team that are not possible with currently available systems, which equips Memorial University to conduct high-impact research with industrial relevance to NL and Canada.

研究工具和仪器补助金被要求为纪念大学购买激光多普勒风速仪（LDA）系统。LDA利用多普勒效应提供流体动力学和流体-固体相互作用的精确测量。教师的增长创造了纪念大学热流体研究的重大扩展，拟议的设备对于申请人正确进行研究计划至关重要。申请人的主要重点是研究多相流，相变/分离和空气动力学中的流动物理。该研究为几项活动提供了显着的好处，包括管道，石油开采，北极和亚北极船舶/结构，流化床，热化学循环，泥浆运输和发电等。 研究结果将对纽芬兰和拉布拉多（NL）和加拿大的经济产生工业相关性和效益。这项研究的成果将改善北极和亚北极地区的石油和天然气开采。对于多相内部流，纪念大学配备了一个大规模（3英寸直径）的多相流回路和一个小规模的回路，具有显着的可操作性是接近完成。新的流动回路设计用于研究相分离、相变绝缘和流动保证等。该研究的目的是通过减少泵送要求和限制超大设备，以及确保处理水的安全处置和限制溢出/泄漏，改善碳氢化合物的长距离运输。 该研究小组正在研究空气动力学、相变和外部多相流的综合物理学，以提高北方沿海地区的风力涡轮机性能，并提高亚北极地区的船舶安全性。一个具有盐水斯帕伊和过冷能力的气候风室在纪念大学即将完成。大量的水滴撞击和积冰将进行实验研究，以改善预测模型和减缓积冰的战略。LDA是一种重要的测量设备，可以通过为相关性开发和模型验证提供精确的局部测量来正确研究盐水和淡水冻结的物理差异。 新的LDA系统将为各种研究项目的研究人员提供高质量和非侵入性的测量。LDA为研究团队提供了目前可用系统无法实现的重要功能，使纪念大学能够进行与NL和加拿大工业相关的高影响力研究。