Simulations of Unsteady Aerodynamic Effects on Innovative Wind Turbine Concepts

Simulations of Unsteady Aerodynamic Effects on Innovative Wind Turbine Concepts
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创新风力涡轮机概念的非定常空气动力效应模拟

DOI:
10.1007/978-3-319-47066-5_36
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Krämer
Krämer
中科院分区:
--
文献类型:
--
作者:
Fischer;Krämer

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本文采用计算流体动力学(CFD)方法研究了一种新型两叶片风力涡轮机和一种采用新型减载方案的三叶片风力涡轮机的非定常空气动力学特性。减载方案由前缘襟翼和后缘襟翼耦合组成。文中给出了襟翼偏转引起的非定常气动力效应,并找到了有效模拟前缘和后缘襟翼耦合的合适时间离散方法,给出了极端偏航条件下双叶涡轮机关于气动力载荷的特性,并与局部流动条件相关联。研究结果可以更好地预测和理解风力涡轮机的非定常空气动力学。
Unsteady aerodynamics of a novel two-bladed wind turbine and a three-bladed wind turbine equipped with an innovative load reduction concept are investigated in the present paper using Computational Fluid Dynamics (CFD). The load reduction concept consists of coupled leading and trailing edge flaps. Unsteady aerodynamic effects caused by flap deflection are shown and a suitable temporal discretization for efficient simulation of coupled leading and trailing edge flaps is found. The behavior of the two-bladed turbine regarding the aerodynamic loads under extremely yawed conditions is presented and associated to the local flow conditions. The results of the studies allow a better prediction and understanding of unsteady aerodynamics of wind turbines.
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DOI: 10.1088/1742-6596/524/1/012134
发表时间: 2014
期刊: Journal of Physics: Conference Series
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DOI: --
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