Wind turbine design and optimization

风力涡轮机的非定常气动弹性行为及其成本敏感性带来了别处所没有的独特设计挑战。尽管在设计越来越大的风力涡轮机方面取得了很大进展，但分析预测仍然存在很大的不确定性，特别是在空气动力学和非线性结构响应领域。明显缺乏足够的空气动力学验证数据。公用事业规模的机器的巨大尺寸可能会造成技术和社会障碍。一种经常被拥护的替代方案是在本地将小型机器(1-10‘S千瓦)安装到最终使用地点。对这些较小机器的流动条件和设计的知识相对较不发达。需要先进的分析工具来推动未来的设计创新，如各种尺度的小翼和弯扭耦合叶片。还需要更好的数值优化技术，应用于完全耦合的多学科气动弹性问题。拟议的研究方案旨在解决这些领域，概述如下：

The unsteady, aeroelastic behaviour of wind turbines and their cost sensitivity poses unique design challenges not found elsewhere. Notwithstanding great strides made in designing increasingly large wind turbines, there remains large uncertainty in analysis predictions, particularly in the areas of aerodynamics and non-linear structural response. Adequate aerodynamic validation data is conspicuously lacking. The sheer size of utility-scale machines can create technical and social impediments. One alternative that is often espoused is to install small machines (1-10's kW) locally to end-use locations. Knowledge of the flow conditions and design of these smaller machines is relatively undeveloped. Advanced analysis tools are required to drive future design innovations, such as winglets and bend-twist coupled blades, across all scales. Better numerical optimization techniques, applied to the fully coupled multidisciplinary aeroelastic problem, are also needed. The proposed research program is aimed at addressing these areas, summarized as follows: