Numerical Simulation of Combined Motions of Wind Turbine Airfoil Flap and Pitch
-
摘要: 现代风力机叶片普遍采用变桨系统降低气动载荷。尾缘襟翼是实现飞机机翼载荷控制的一种可行方法，然而由于相关技术尚未成熟，动尾翼尚未实际应用在风力机叶片上。本文采用数值计算模拟和分析动尾翼与翼型俯仰耦合状况下的动态升力变化。采用结构化网格，对尾缘襟翼部分应用浸入边界方法，其余部分仍然沿用传统贴体网格算法，实现了动尾翼的仿真又保证了较高的计算效率。计算结果与风洞实验进行了详细对比，动态升力的变化趋势和大小均显示了较好的吻合，为包含动尾翼的智能叶片开发提供参考。Abstract: Modern wind turbine has pitch control systemwhich alleviates aerodynamic loads.Trailing edge flap is a feasible aerodynamic load control device for airplane wings. However, therelevant techniques have not been fully developed. Therefore, the trailing edge flap has not been successfully applied to the wind turbine rotors. The dynamic lift caused by the combined motions of airfoil flap and pitch is simulated through numerical method. The trailing edge part is simulated with an immersed boundary method, and the other part of the airfoil is modeled by a traditional curvilinear mesh, which helps to simulate the trailing edge flap and meanwhile ensure high calculation efficiency. The results were thoroughly compared with the existing wind tunnel experiments. Relatively good agreements were achieved which provide the references for developing the smart blades with trailing edge flaps.
-
Key words:
- trailing edge flap /
- airfoil pitch motion /
- dynamic lift /
- numerical simulation
-
表 1 俯仰与尾缘襟翼运动函数组合
组合 俯仰运动函数 尾缘襟翼运动函数 1 $ \alpha = 4^\circ + 6^\circ \sin \left( {10{\text{π} }t} \right)$ $ \delta = 0^\circ + 5.4^\circ \sin (20{\text{π} }t - 148^\circ )$ 2 $ \alpha = 4^\circ + 6^\circ \sin \left( {10{\text{π} }t} \right)$ $ \delta = 0^\circ + 5.4^\circ \sin (20{\text{π} }t - 298^\circ )$ 3 $ \alpha = 4^\circ + 6^\circ \sin \left( {10{\text{π} }t} \right)$ $ \delta = 0^\circ + 5.4^\circ \sin (20{\text{π} }t - 357^\circ )$ 4 $ \alpha = 5^\circ + 5.5^\circ \sin \left( {10{\text{π} }t} \right)$ $ \delta = 0^\circ + 5.0^\circ \sin (20{\text{π} }t - 148^\circ )$ 5 $ \alpha = 4.5^\circ + 5.75^\circ \sin \left( {10{\text{π} }t} \right)$ $ \delta = 0^\circ + 5.0^\circ \sin (20{\text{π} }t - 206^\circ )$ 
下载: 导出CSV
-
[1] BARLAS T K, VAN KUIK G A M. Review of state of the art in smart rotor control research for wind turbines[J]. Progress in Aerospace Sciences, 2010, 46(1): 1-27. doi: 10.1016/j.paerosci.2009.08.002 [2] 余畏, 张明明, 徐建中. 基于柔性尾缘襟翼的风电叶片气动载荷智能控制[J]. 工程热物理学报, 2013, 34(6): 1055-1060.YU W, ZHANG M M, XU J Z. Effect of smart rotor control using deformable trailing edge flap on aerodynamic load reduction[J]. Journal of Engineering Thermophysics, 2013, 34(6): 1055-1060. (in Chinese) [3] KATZ J, PLOTKIN A. Low-speed aerodynamics: from wing theory to panel methods[M]. New York: McGraw Hill House, 1991: 386-390 [4] 谢凯, ABBAS L K, 陈东阳, 等. 翼型非定常来流下复合运动动态失速仿真[J]. 哈尔滨工程大学学报, 2019, 40(5): 865-871.XIE K, ABBAS L K, CHEN D Y, et al. Numerical simulations on dynamic stall of a complex motion of airfoil under unsteady freestream velocity[J]. Journal of Harbin Engineering University, 2019, 40(5): 865-871. (in Chinese) [5] 徐佩, 郭春雨, 王超, 等. 二维振荡翼型俯仰和升沉耦合运动的水动力性能分析[J]. 船舶力学, 2020, 24(3): 271-281.XU P, GUO C Y, WANG C, et al. Hydrodynamic performance analysis of pitching and heaving coupling motion for two dimensional oscillating airfoil[J]. Journal of Ship Mechanics, 2020, 24(3): 271-281. (in Chinese) [6] 张一楠, 张明明, 蔡畅, 等. 仿鲸鱼鳍翼型动态气动力载荷控制研究[J]. 工程热物理学报, 2020, 41(4): 884-890.ZHANG Y N, ZHANG M M, CAI C, et al. Load control on a dynamically pitching wind turbine airfoil with bionic wavy leading edge[J]. Journal of Engineering Thermophysics, 2020, 41(4): 884-890. (in Chinese) [7] 郝文星, 李春, 丁勤卫, 等. 随机风况下襟翼闭环载荷控制的数值研究[J]. 工程热物理学报, 2017, 38(6): 1237-1242.HAO W X, LI C, DING Q W, et al. Numerical study of the closed loop load control of trailing edge flap under the random wind condition[J]. Journal of Engineering Thermophysics, 2017, 38(6): 1237-1242. (in Chinese) [8] 李传峰, 徐宇, 赵晓路, 等. 风力机翼型尾缘襟翼动态特性分析[J]. 工程热物理学报, 2014, 35(5): 883-887.LI C F, XU Y, ZHAO X L, et al. Analysis on dynamic performance of trailing edge flap on wind turbine airfoil[J]. Journal of Engineering Thermophysics, 2014, 35(5): 883-887. (in Chinese) [9] PESKIN S C. The fluid dynamics of heart valves: experimental, theoretical, and computational methods[J]. Annual Review of Fluid Mechanics, 1982, 14: 235-259. doi: 10.1146/annurev.fl.14.010182.001315 [10] KALITZIN G, IACCARINO G. Turbulence modeling in an immersed-boundary RANS method[R]// Center for Turbulence Research Annual Research Briefs, Stanford University, California, 2002: 415-426 [11] ZHU W J, BEHRENS T, SHEN W Z, et al. Hybrid immersed boundary method for airfoils with a trailing-edge flap[J]. AIAA Journal, 2013, 51(1): 30-41. doi: 10.2514/1.J051446 [12] ZHU W J, SHEN W Z, SØRENSEN J N. Numerical investigation of flow control feasibility with a trailing edge flap[J]. Journal of Physics:Conference Series, 2014, 524: 012102. doi: 10.1088/1742-6596/524/1/012102 [13] SPECKLIN M, DELAURÉ Y. A sharp immersed boundary method based on penalization and its application to moving boundaries and turbulent rotating flows[J]. European Journal of Mechanics-B/Fluids, 2018, 70: 130-147. doi: 10.1016/j.euromechflu.2018.03.003 [14] WANG L, TIAN F B. Numerical study of flexible flapping wings with an immersed boundary method: Fluid-structure-acoustics interaction[J]. Journal of Fluids and Structures, 2019, 90: 396-409. doi: 10.1016/j.jfluidstructs.2019.07.003 [15] KRZYSIAK A, NARKIEWICZ J. Aerodynamic loads on airfoil with trailing-edge flap pitching with different frequencies[J]. Journal of Aircraft, 2006, 43(2): 407-418. doi: 10.2514/1.15597 -
点击查看大图
图(14) / 表(1)
计量
- 文章访问数: 88
- HTML全文浏览量: 79
- PDF下载量: 12
- 被引次数: 0
