Aeroelastic tailoring in wind-turbine blade applications
Aeroelastic tailoring in wind-turbine blade applications
复制标题
风力涡轮机叶片应用中的气动弹性剪裁
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
G. Bir
中科院分区：
文献类型：
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作者：
P. Veers;D. Lobitz;G. Bir
本文综述了气动弹性剪裁作为一种经济有效的被动方法来塑造功率曲线和降低载荷的有关问题。风力涡轮机叶片在运行过程中会发生弯曲和扭曲，从而有效地改变攻角，进而影响负载和能量产生。现在使用的叶片具有显著的气动弹性耦合，或者是有意的，或者是因为柔性和轻质设计。由于气动弹性效应在柔性叶片设计中几乎是不可避免的，因此，可能需要使这些效应符合作者的利益。已经致力于将柔性装置添加到叶片或叶片尖端，以在强风中被动地调节功率（或速度）。还可以在叶片蒙皮中适当地铺设非对称纤维，从而在叶片的载荷响应中建立少量的所需扭转。(Such耦合类似于没有机械铰链的分布式{delta}{sub 3}。定制的扭转可以产生气动弹性效应，其在更好的功率产生或振动缓解或两者中具有回报。一些研究工作已经解决了这个问题的不同部分。综述了直升机旋翼气动弹性剪裁的研究和发展。势能增益作为扭转耦合的函数进行了审查。研究了这种耦合对转子稳定性的影响，并在这里提出。同时，还研究了在拉伸或弯曲载荷下设计扭转耦合的能力。
This paper reviews issues related to the use of aeroelastic tailoring as a cost-effective, passive means to shape the power curve and reduce loads. Wind turbine blades bend and twist during operation, effectively altering the angle of attack, which in turn affects loads and energy production. There are blades now in use that have significant aeroelastic couplings, either on purpose or because of flexible and light-weight designs. Since aeroelastic effects are almost unavoidable in flexible blade designs, it may be desirable to tailor these effects to the authors advantage. Efforts have been directed at adding flexible devices to a blade, or blade tip, to passively regulate power (or speed) in high winds. It is also possible to build a small amount of desirable twisting into the load response of a blade with proper asymmetric fiber lay up in the blade skin. (Such coupling is akin to distributed {delta}{sub 3} without mechanical hinges.) The tailored twisting can create an aeroelastic effect that has payoff in either better power production or in vibration alleviation, or both. Several research efforts have addressed different parts of this issue. Research and development in the use of aeroelastic tailoring on helicopter rotors is reviewed. Potential energy gains as a function of twist coupling are reviewed. The effects of such coupling on rotor stability have been studied and are presented here. The ability to design in twist coupling with either stretching or bending loads is examined also.