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首页> 外文期刊>Renewable energy >Ground testing of a 1% gravo-aeroelastically scaled additively- manufactured wind turbine blade with bio-inspired structural design
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Ground testing of a 1% gravo-aeroelastically scaled additively- manufactured wind turbine blade with bio-inspired structural design

机译：用生物启发结构设计的1％Gravo-Aero-reallastics缩放的1％Gravo-Aero-气球缩放的地面测试

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A gravo-aeroelastic scaling (GAS) method is developed to design wind turbine blades that represent centrifugal, aerodynamic, and gravitational loads of extreme-scale turbines. To match these elements, certain blade characteristics are given priority: non-dimensional 1st flap-wise frequency, non-dimensional flapping tip deflection, and tip-speed-ratio. Using the GAS method, a 1% sub-scale blade was designed to match the mass distributions and ground tested to match the non-dimensional flap-wise dynamics and deflections of Sandia National Lab's 13.2-MW blade. To the authors' knowledge, this is the first manufactured blade model to employ gravo-aeroelastic scaling using additive manufacturing and bio-inspiration. A series of scale models were designed, built, and ground-tested using weights consistent with scaled steady rated load conditions of an extreme-scale turbine. The models designed were evolved to increase gravo-elastic scaling performance by employing lightweight bio-inspirational morphology and carbon fiber reinforcements. The final version has non-dimensional gravo-elastic errors as follows: 3% in total mass, 15.6% in deflection from ground-based loads representing full-scale steady rated conditions, and 8.1% in the first flap-wise modal frequency (when normalized by the scaled rpm for rated conditions). This model demonstrates the GAS concept can be applied to manufacture sub-scale models as small as 1% of an extreme-scale rotor blade. (C) 2019 Elsevier Ltd. All rights reserved.
机译：开发了一种重型气弹性缩放（气体）方法，设计了一种表示离心，空气动力学和重力载荷的风力涡轮机叶片。为了匹配这些元件，某些刀片特性优先于：非维度第一襟翼频率，非维度拍打尖端偏转和尖端速度。使用气体方法，设计了1％的亚级刀片以匹配质量分布和地面测试，以匹配桑迪亚国家实验室的13.2 MW刀片的非维度襟翼 - 明智动态和偏转。为了提交人的知识，这是第一个使用添加剂制造和生物启发的Gravo-Aero弹性缩放的制造刀片模型。设计了一系列规模模型，使用符合极值涡轮机的尺度稳定额定负载条件一致的重量设计，构建和地面测试。设计的型号被演变为通过采用轻质生物鼓舞人心的形态和碳纤维增强剂来增加拉伸弹性缩放性能。最终版本具有非维重型误差，如下：总质量总量3％，偏转15.6％，偏转的载荷表示全规模稳定的条件，第一个翻盖模型频率为8.1％（何时被缩放的RPM标准化为额定条件）。该模型演示了天然气概念可以应用于制造小于极级转子叶片的1％的亚级模型。 （c）2019 Elsevier Ltd.保留所有权利。

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