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: $ 10.89万
• 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: 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=608342
• 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.

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液压涡轮机操作中遇到的四个非设计相关现象的预测。该项目中研究的四个流动现象是：1）在最佳效率点以上的载荷下，气管恢复因子的突然下降，2）空化诱导的降水管压力波动，3）通过曝气溶解氧气的增强； 4）4）流体结构互动中的流体动力阻尼和刚度。这四种现象将使用Andritz Hydro提供的实验数据提供应用程序上下文，以支持模拟方法开发和验证的最新研究。因此，预计该项目的贡献将涵盖流动模拟方法中的重大发展，从而使现象学洞察力对涡轮机中的外观流动条件有更好的见解。该项目将专门解决单相流量模拟，多相计算流体动力学（CFD）和耦合流体结构相互作用模拟方法的高级湍流建模的开发和验证。