Elastic actuator line modelling for wake-induced fatigue analysis of horizontal axis wind turbine blade

被引：60
作者：
Meng, Hang [1 ,2 ]
Lien, Fue-Sang [1 ]
Li, Li [2 ]
机构：
[1] Univ Waterloo, Dept Mech & Mechatron Engn, Waterloo, ON N2L 3G1, Canada
[2] North China Elect Power Univ, Sch Renewable Energy, Beijing 102206, Peoples R China
来源：
RENEWABLE ENERGY | 2018年 / 116卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Wind turbine wake; Wake-induced fatigue; Actuator line model; Wind turbine aeroelastic simulation for wind turbine blade; COMPUTATIONAL FLUID-DYNAMICS; PERFORMANCE; SIMULATION; LOADS;
D O I：
10.1016/j.renene.2017.08.074
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Wake effect causes fatigue increase on the horizontal axis wind turbine (HAWT) blades. This wake induced fatigue has significant impacts on the efficiency and lifespan of the whole wind farm. However, conventional aeroelastic codes are deficient in terms of turbulent wake modelling and wake interaction modelling. To accurately carry out the aeroelastic simulation in multi-wake operation, an "elastic actuator line" (EAL) model is proposed. Essentially, this model is the combination of the actuator line (AL) wake model and a finite difference structural model. The present research includes two parts. Firstly, the proposed EAL model is outlined. To better establish the two-way coupling between the structural model and the AL model, the transformation of a set of structural equations is presented. Secondly, numerical structural model is established. To verify the present model, the simulated results by EAL for a single NREL 5 MW turbine are compared with those obtained with the aeroelastic code FAST. And the comparison shows a good agreement for both high and low TSRs (Tip-Speed-Ratios). Another case study for the wake interaction involving two staggered HAWTs is also carried out, which shows that the downstream wind turbine truly experiences an obvious wake-induced fatigue increase based on our equivalent fatigue load analysis. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：423 / 437
页数：15
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