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: Deschênes, Claire
• 金额: $ 35.65万
• 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: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=649067
• 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，水力发电的发展已适应市场放松管制和电网间歇性能源的引入。因此，水轮机的启动顺序数量和空载条件下用于旋转备用的时间都增加了。这些变化加剧了结构问题，导致转轮叶片后缘出现疲劳裂纹，从而导致生产损失和维护成本增加。拉瓦尔大学液压机械实验室 (LAMH) 与液压机械联盟成员（ANDRITZ Hydro、GE Renewable Energy、VOITH Hydro、EDF 和 Hydro-Québec）已同意开展 Tr-FRANCIS 研究项目，旨在研究混流式水轮机瞬态和空载状态下的流固相互作用。这个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。这反过来可能会简化新能源在电网上的整合。**通过流体动力学、流体结构相互作用和振动方面的研究人员之间的合作，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水头混流式水轮机转轮在启动顺序和空载运行期间的寿命的流动引起的激励。”**研究将集中于 代表 140 MW 生产装置的缩小模型涡轮机。通过新颖的测量和模拟，Tr-FRANCIS 将为安装最广泛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。************