Multiphase and dynamic CFD analysis in hydraulic turbines

水轮机的多相和动态 CFD 分析

• 批准号: 500876-2016
• 负责人: Guibault, François
• 金额: $ 5.05万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=691482
• 关键词: Multiphase; dynamic; CFD; analysis; hydraulic

This research project, in partnership with Andritz Hydro Canada Inc., aims to tackle the prediction of four off-design flow related phenomena encountered in the operation of hydraulic turbines, through the development of state of the art computational approaches. The four flow phenomena studied in this project are: 1) the sudden drop in the draft-tube recovery factor at loads just above the best efficiency point, 2) cavitation induced draft-tube pressure fluctuations, 3) dissolved oxygen enhancement through aeration, and 4) hydrodynamic damping and stiffness in fluid-structure interaction. These four phenomena will each provide the application context to support state-of-the-art research on simulation method development and validation, using experimental data provided by Andritz Hydro. The contributions of this project are therefore expected to encompass significant developments in flow simulation methods leading to better phenomenological insight into off-design flow conditions in turbines. The project will specifically address the development and validation of advanced turbulence modeling for single-phase flow simulations, multiphase computational fluid dynamics (CFD) and coupled fluid-structure interaction simulation methodologies.The goal of the project consists in developing advanced simulation approaches to assist engineers in their evaluation of designs for the complex operating conditions in which hydraulic turbomachinery is now operated. Through the project, five graduate students (3 Ph.Ds. and 2 Masters) will be trained in state-of-the-art flow simulation methodologies through concrete industrial applications, thereby providing each of them with deep scientific knowledge and highly sought engineering expertise.

该研究项目与 Andritz Hydro Canada Inc. 合作，旨在通过开发最先进的计算方法来解决水轮机运行中遇到的四种与非设计流量相关的现象的预测问题。该项目研究的四种流动现象是：1）在刚好高于最佳效率点的负载下尾水管回收系数突然下降，2）空化引起的尾水管压力波动，3）通过曝气增强溶解氧，以及4) 流固耦合中的流体动力阻尼和刚度。这四种现象都将提供应用环境，以支持使用安德里茨水电提供的实验数据进行模拟方法开发和验证的最先进研究。因此，该项目的贡献预计将涵盖流动模拟方法的重大发展，从而更好地了解涡轮机中非设计流动条件。该项目将专门致力于单相流模拟、多相计算流体动力学 (CFD) 和耦合流固耦合模拟方法的高级湍流建模的开发和验证。该项目的目标在于开发先进的模拟方法来协助工程师他们对液压涡轮机目前运行的复杂操作条件的设计进行了评估。通过该项目，五名研究生（3名博士和2名硕士）将通过具体的工业应用接受最先进的流动模拟方法的培训，从而为他们每个人提供深厚的科学知识和备受追捧的工程专业知识。