Hydrokinetic Energy: Turbine technologies and Array Deployment Optimization through CFD

流体动能：通过 CFD 进行涡轮机技术和阵列部署优化

• 批准号: RGPIN-2018-04527
• 负责人: Dumas, Guy
• 金额: $ 6.7万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 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=754433
• 关键词: Hydrokinetic; Energy; Turbine; technologies; Array

This five-year research program aims at supporting the development of the emerging sector of renewable energy based on in-stream water turbines. Through extensive CFD simulations with experimental validation, we plan to analyze and improve the performances of turbine designs and to provide guidelines for the optimal deployment of arrays of turbines in either tidal or river currents. Doing so, we will also contribute to improve our fundamental understanding of several challenging and critical issues such as turbine wake recovery mechanisms and the impact of upstream turbulence or turbine ducts on those mechanisms.Our research achievements over the past six years have paved the way for this ambitious program structured around two main topics, namely, Hydrokinetic turbine technologies, and Array deployment optimization, divided respectively in three and four research projects.In particular, we plan to continue the development and optimization of two cross-flow turbine concepts, namely the oscillating-foils hydrokinetic turbine and the vertical-axis turbine technology. Both types are characterized by a rectangular harvesting plane and favorable wake recovery mechanisms which make them more promising designs than rotating blades axial-flow turbines. The impact of blade end-plates, of duct and diffuser enhancers and of turbine supporting structure will be investigated, among other things, with our state-of-the-art numerical simulation tools. Experimental validations on small-scale prototypes are also planned thanks to our collaborators at University of Victoria and at the national laboratory NRC/OCRE in Ottawa. At the scale of the turbines farm, to keep the computing demands realistic, one requires a simplified turbine modelling approach to reliably take into account the presence and interactions of the turbines in a three-dimensional numerical model of the water resource (tidal channel or river, free-surface, bathymetry). The simplified turbine modeling approach we propose shall be accurate in terms of power extraction and turbulent wake signature of each turbine, in addition of being robust enough to operate in perturbed flow conditions and flexible enough to incorporate the effect of duct, diffuser enhancer and turbine structure if necessary. Reliable reference databases needed to develop and compare the simplified model will be generated with massive, high-fidelity CFD simulations (3D DDES) thanks to the supercomputing resources of Compute Canada.This research program will permit to train at least 13 students in this rapidly growing sector of renewable energy with highly sought skills in state-of-the-art CFD and high-performance computing (HPC). This program is likely to have a true positive impact in Canada by helping to diversify its clean energy sources and by helping shape a new industry sector with coveted high-tech jobs and great exporting potentials.

这项为期五年的研究计划旨在支持基于流中水轮机的新兴可再生能源部门的发展。通过大量的CFD模拟和实验验证，我们计划分析和改进涡轮机设计的性能，并为潮汐或河流中涡轮机阵列的最佳部署提供指导。这样做，我们也将有助于提高我们对几个具有挑战性和关键性的问题，如涡轮机尾流恢复机制和上游湍流或涡轮机管道对这些机制的影响的基本理解。我们在过去六年的研究成果为这个雄心勃勃的计划铺平了道路，该计划围绕两个主要主题，即流体动力涡轮机技术和阵列部署优化，分别分为三个和四个研究项目。特别是，我们计划继续开发和优化两个横流涡轮机概念，即涡轮翼流体动力涡轮机和垂直轴涡轮机技术。这两种类型的特点是一个矩形的收获平面和良好的尾流恢复机制，使他们更有前途的设计比旋转叶片轴流式涡轮机。将使用我们最先进的数值模拟工具研究叶片端板、管道和扩压器增强器以及涡轮机支撑结构的影响。由于我们在维多利亚大学和渥太华的国家实验室NRC/奥克雷的合作，还计划对小规模原型进行实验验证。 在涡轮机农场的规模上，为了使计算需求保持现实，需要一种简化的涡轮机建模方法，以可靠地考虑水资源（潮汐通道或河流、自由表面、水深测量）的三维数值模型中涡轮机的存在和相互作用。我们提出的简化涡轮机建模方法应在每个涡轮机的功率提取和湍流尾流特征方面准确，此外还应足够稳健以在扰动流条件下运行，并足够灵活以在必要时纳入管道、扩压器增强器和涡轮机结构的影响。借助加拿大计算中心的超级计算资源，将通过大量高保真CFD模拟（3D DDES）生成开发和比较简化模型所需的可靠参考数据库。该研究项目将允许在这个快速发展的可再生能源领域培养至少13名学生，他们具有最先进的CFD和高性能计算（HPC）方面的高度技能。该计划可能会对加拿大产生真正的积极影响，帮助实现清洁能源的多样化，并帮助塑造一个拥有令人垂涎的高科技就业机会和巨大出口潜力的新工业部门。