Advanced prediction methods for aircraft and vertical axis wind turbine design

飞机和垂直轴风力涡轮机设计的先进预测方法

• 批准号: 4556-2007
• 负责人: Paraschivoiu, Ion
• 金额: $ 2.19万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=361461
• 关键词: Advanced; prediction; methods; aircraft; vertical

Based on previous achievements, the research proposed in this application will be focused on the development of existent or new models and methods, with enhanced capabilities, for the simulation of icing & anti-icing phenomena and vertical axis wind turbine performance prediction and optimization.Being a major hazard in-flight icing is included in the aircraft design, certification and operating regulations. For designers and certification authorities the numerical simulation of airframe icing is becoming a more affordable alternative to wind tunnel experiments or flight tests. Current two and three dimensional icing codes are very useful, but their accuracy needs further improvement. Ice growth physics must be realistically modeled, with accreted shape/flow field iteration. In this domain the proposed research will address problems of numerical simulation of water impingement, icing related roughness, splashing and shedding of supercooled large droplets as well as hot-air anti-icing.Recent experimental and numerical studies prove the growing interest in assessing and using the wind potential of urban environments, where wind accelerates near buildings and significantly gains in speed around the higher ones. This "concentrator effect" can be used to convert, close to the consumer, the wind's enhanced energy. In such environ-ments small size (up to 100 kW) Vertical Axis Wind Turbines (VAWT) have certain advantages over the Horizontal Axis type, hence their use is favored. The wind energy related research proposed here regards the prediction and optimization of the VAWT performances in urban conditions. The Darrieus-type VAWT rotors, are also suitable for tidal currents power generation, due to the fact that their rotation is independent from the direction of the flow, which greatly simplifies the necessary equipment.The results of the proposed research (models, methods and numerical tools) will help the Canadian aerospace industry to build airplanes able to fly safely in all-weather conditions and to increase the renewable energy part in Canada's energy resources.

在前人研究成果的基础上，本课题的研究重点是发展现有的或新的模型和方法，增强能力，用于结冰和防冰现象的模拟以及垂直轴风力涡轮机性能预测和优化。对于设计人员和认证机构来说，机体结冰的数值模拟正在成为风洞试验或飞行试验的一种更经济的替代方法。现有的二维和三维积冰数值模拟方法已经很实用，但其精度还有待进一步提高。冰的生长物理必须现实地模拟，与增生的形状/流场迭代。在这一领域，拟议的研究将解决的问题的数值模拟水冲击，结冰相关的粗糙度，飞溅和脱落的过冷大液滴以及热空气anti-icing.Recent的实验和数值研究证明了越来越多的兴趣，评估和使用风的潜力城市环境中，风在建筑物附近加速和周围的更高的速度显着增益。这种“集中器效应”可以用来在消费者附近转换风能。在这种设备中，小型（高达100 kW）垂直轴风力涡轮机（VAWT）比水平轴型具有一定的优势，因此它们的使用受到青睐。这里提出的风能相关研究涉及城市条件下VAWT性能的预测和优化。Darrieus型VAWT转子也适用于潮流发电，因为它们的旋转与水流方向无关，这大大简化了必要的设备。（模特，方法和数值工具）将帮助加拿大航空航天工业建造能够在所有环境中安全飞行的飞机，气候条件，并增加加拿大能源资源中的可再生能源部分。