Investigation of the fluid-structure dynamics during transient operation of Francis turbines - Tr-FRANCIS

混流式水轮机瞬态运行期间的流固动力学研究 - Tr-FRANCIS

• 批准号: 507814-2016
• 负责人: Houde, SébastienH
• 金额: $ 16.84万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=754311
• 关键词: Investigation; fluid; structure; dynamics; during

Hydro-electricity represents 60% of the electricity produced in Canada. In the last 20 years hydro-electricity production has evolved to accommodate market deregulation and the introduction of intermittent energy sources on the power grid. Hydraulic turbines thus saw an increase in the number of start sequences and in the amount of time spent in no-load conditions for spinning reserve. Those changes exacerbated structural problems leading, among other, to fatigue cracks at the trailing edges of the runner blades and consequently to production losses and increased maintenance cost. The Laboratory of Hydraulic Machines (LAMH) form Laval University along with the members of the Consortium on Hydraulic Machines (ANDRITZ Hydro, GE Renewable Energy, VOITH Hydro, EDF and Hydro-Québec) have agreed to undertake the Tr-FRANCIS research project aimed at studying fluid-structure interactions during transient and no-load regimes in Francis turbines. This pre-competitive project, supported also by the InnovÉE grant agency, will provide the R&D departments of the participating industrial partners with knowledge, tools and methodologies to optimize turbine designs or operation in order to increase flexibility without penalizing the machine life. This may in turn ease the integration of new energy sources on the power grid.Through collaboration between researchers in hydrodynamic, fluid-structure interaction and vibration, Tr-FRANCIS main objective is to:"Identify, describe and parametrize, through measurements and simulations, the flow induced excitations influencing the lifetime of medium head Francis turbine runners during start-up sequences and no-load operation."Investigations will focus on a scaled down model turbine representing a 140 MW production unit. Through novel measurements and simulations, Tr-FRANCIS will provide a unique insight into the complex fluid-structure interactions in the most widely installed type of hydro-turbine.

水力发电占加拿大发电量的60%。在过去20年中，水力发电的发展适应了市场放松管制和在电网上采用间歇性能源的情况。因此，水轮机的启动顺序数量和在空载条件下旋转储备所花费的时间量都有所增加。这些变化加剧了结构问题，导致转轮叶片后缘处的疲劳裂纹，并因此导致生产损失和维护成本增加。拉瓦尔大学水力机械实验室（LAMH）沿着水力机械联盟成员（安德里茨水电、GE可再生能源、VOITH水电、EDF和Hydro-Québec）已同意开展Tr-FRANCIS研究项目，旨在研究弗朗西斯水轮机瞬态和空载状态下的流体-结构相互作用。该竞争前项目也得到了InnovÉE资助机构的支持，将为参与工业合作伙伴的研发部门提供知识、工具和方法，以优化涡轮机设计或操作，从而在不影响机器寿命的情况下提高灵活性。通过与流体动力学、流体-结构相互作用和振动领域的研究人员的合作，Tr-FRANCIS的主要目标是：“通过测量和模拟，识别、描述和参数化影响中等水头弗朗西斯涡轮机转轮在启动序列和空载运行期间寿命的流致激励。“调查将集中在一个代表140兆瓦生产装置的缩小模型涡轮机上。通过新颖的测量和模拟，Tr-FRANCIS将为最广泛安装的水轮机类型中复杂的流体-结构相互作用提供独特的见解。