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首页> 外文会议>ASME Wind Energy Symposium >AERODYNAMIC PRESSURE AND FLOW-VISUALIZATION MEASUREMENT FROM A ROTATING WIND TURBINE BLADE
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AERODYNAMIC PRESSURE AND FLOW-VISUALIZATION MEASUREMENT FROM A ROTATING WIND TURBINE BLADE

机译：来自旋转风力涡轮机叶片的空气动力学压力和流量可视化测量

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摘要

Aerodynamic, load, flow-visualization, and inflow measurements have been made on a 10-m, three-bladed, downwind, horizontal-axis wind turbine (HAWT). A video camera mounted on the rotor was used to record nighttime and daytime video images of tufts attached to the low-pressure side of a constant-chord, zero-twist blade. Load measurements were made using strain gages mounted at every 10% of the blade's span. Pressure measurements were made at 80% of the blade's span. Pressure taps were located at 32 chordwise positions, revealing pressure distributions comparable with wind tunnel data. Inflow was measured using a vertical-plane array of eight propvane and five triaxial (U-V-W) prop-type anemometers located 10 m upwind in the predominant wind direction. One objective of this comprehensive research program was to study the effects of blade rotation on aerodynamic behavior below, near, and beyond stall. To this end, flow patterns are presented here that reveal the dynamic and steady behavior of flow conditions on the blade. Pressure distributions are compared to flow patterns and two-dimensional wind tunnel data. Separation boundary locations are shown that change as a function of spanwise location, pitch angle, and wind speed.
机译：气动，负荷，流量可视化和流入测量已经在10米，三刃，下顺，水平轴线风力涡轮机（HAWT）上进行。安装在转子上的摄像机用于记录连接到恒弦零点的低压侧的簇的夜间和白天视频图像。使用在每10％的刀片跨度安装的应变计进行负载测量。压力测量以刀片跨度的80％制成。压力水龙头位于32弦位置，揭示了与风洞数据相当的压力分布。使用八个普瓦那的垂直平面阵列测量流入，五个三轴（U-V-W）道型风速仪，位于主导的风向为10μmUpwind。这项综合研究计划的一个目标是研究叶片旋转对下面的空气动力学行为的影响，靠近摊位。为此，这里介绍了流动模式，其揭示了刀片上的流动条件的动态和稳定行为。将压力分布与流模式和二维风洞数据进行比较。分离边界位置显示，随着翼展位置，俯仰角和风速的函数而变化。

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