Experimental investigation of Vortex Generator and Gurney Flap performance effect under dynamic stall and rotational effects

动态失速和旋转效应下涡流发生器和格尼襟翼性能影响的实验研究

基本信息

项目摘要

Robust, effective and easily implemented passive flow control devices such as vortex generators (VG) and Gurney Flaps (GF) are particularly appealing for wind turbine applications where increased performance and longevity is sought after. However, one of the particularities of wind turbines is that they operate in turbulent conditions and as a result experience dynamic stall. This renders all passive flow control device studies performed under static conditions rather limited with regard to their applicability. Furthermore, rotational effects on wind turbine blades play a crucial role and no complete investigation should exclude them. Although some relevant research has been conducted in a helicopter rotor frame, wind turbines face specific challenges (e.g., different turbulence time scales, increased blade thickness, constantly separated radial flow) that call for dedicated tests on wind turbine models. Additionally, research in combined VG and GF application is scarce and practically non-existent in a dynamic stall or rotating blade frame. The proposed project aims at progressing beyond the current state of the art and by covering the aforementioned knowledge gaps. This will be achieved by performing an extended wind tunnel study on pitching airfoils equipped with VGs and GFs and on a three meter small horizontal axis wind turbine model (BeRT) also equipped with passive flow control devices.The investigation is directly relevant to current full-scale small wind turbines and is the first step towards the combined application of VGs and GFs to large wind turbines.The objectives of the proposed investigation are to:1. Explore an effective VG configuration for a wind turbine airfoil experiencing dynamic stall.2. Find an optimal GF configuration for a wind turbine airfoil experiencing dynamic stall.3. Find the best way to combine the positive effects of VGs and GFs for a wind turbine airfoil experiencing dynamic stall.4. Study the flow past the selected VG, GF and VG + GF configurations on the actual wind turbine model BeRT in a wind tunnel.5. Generate a broad and accurate experimental data base that will be used to validate numerical models of the effect of VGs and GFs in the future.
坚固、有效且易于实施的被动流控制装置,例如涡流发生器(VG)和格尼襟翼(GF),对于追求提高性能和寿命的风力涡轮机应用特别有吸引力。然而,风力涡轮机的特殊性之一是它们在湍流条件下操作,因此经历动态失速。这使得在静态条件下进行的所有被动流量控制装置研究的适用性相当有限。此外,风力涡轮机叶片上的旋转效应起着至关重要的作用,任何完整的研究都不应排除它们。尽管已经在直升机转子框架中进行了一些相关研究,但是风力涡轮机面临特定的挑战(例如,不同的湍流时间尺度、增加的叶片厚度、不断分离的径向流),这要求对风力涡轮机模型进行专门的测试。此外,在动态失速或旋转叶片框架中,对VG和GF组合应用的研究很少,实际上不存在。拟议项目旨在超越现有技术水平,弥补上述知识差距。这将通过对装有VG和GF的俯仰翼型和装有被动流控制装置的3米小型水平轴风力涡轮机模型(BeRT)进行扩展风洞研究来实现。这是将风力发电机和风力发电机联合应用于大型风力发电机的第一步。1.探索适用于经历动态失速的风力涡轮机机翼的有效VG配置。2.为经历动态失速的风力涡轮机翼型找到最佳GF配置。找到最好的方法来结合联合收割机的积极影响的风力涡轮机翼型经历动态失速的VG和GF。在风洞中对所选的VG、GF和VG + GF配置在实际的风力涡轮机模型BeRT上的流动进行研究.生成广泛而准确的实验数据库,用于验证未来VG和GF影响的数值模型。

项目成果

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Dr.-Ing. Christian Nayeri其他文献

Dr.-Ing. Christian Nayeri的其他文献

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{{ truncateString('Dr.-Ing. Christian Nayeri', 18)}}的其他基金

The Effect of Strouhal Number, Velocity Ratio and Phase Correlation on Separation Control with Spatially Oscillating Jets
斯特劳哈尔数、速度比和相位相关性对空间振荡射流分离控制的影响
  • 批准号:
    442206407
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Aerodynamic Drag Reduction of a Platoon of Generic Tractor-Trailers equipped with Base Flaps under Realistic Boundary Conditions
现实边界条件下配备基础襟翼的一排通用牵引拖车的气动减阻
  • 批准号:
    326917008
  • 财政年份:
    2017
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Experimental assessment of active flow control techniques for wind turbines with a wind tunnel Demonstrator
使用风洞演示器对风力涡轮机主动流量控制技术进行实验评估
  • 批准号:
    218736457
  • 财政年份:
    2012
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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背景系统旋转对圆形涡环和非圆形涡环流动动力学影响的实验研究
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温度分层对旋涡射流涡流破裂中全局模态发生影响的实验研究
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Experimental investigation of the effect of coherent secondary structures upon a tip vortex
相干二级结构对尖端涡流影响的实验研究
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    EP/H030360/1
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    2010
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An experimental investigation of active control of an oscillating wing tip vortex
振荡翼尖涡主动控制的实验研究
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  • 财政年份:
    2010
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    Alexander Graham Bell Canada Graduate Scholarships - Doctoral
An experimental investigation of active control of an oscillating wing tip vortex
振荡翼尖涡主动控制的实验研究
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  • 财政年份:
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振荡翼尖涡主动控制的实验研究
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    362198-2008
  • 财政年份:
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    Alexander Graham Bell Canada Graduate Scholarships - Doctoral
Experimental and Numerical Investigation of the Mechanisms of Local Extinction Using Flame Kernel-Vortex Interactions
利用火焰核-涡旋相互作用对局部消光机制进行实验和数值研究
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    0237406
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    2003
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    Continuing Grant
Experimental Investigation of Vortex Dynamics
涡动力学的实验研究
  • 批准号:
    7516987
  • 财政年份:
    1975
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EXPERIMENTAL INVESTIGATION OF VORTEX DYNAMICS
涡动力学的实验研究
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    7464604
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    1974
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    --
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EXPERIMENTAL INVESTIGATION OF VORTEX DYNAMICS
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    7464603
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    1974
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