为探究风力机尾流对沙尘输运的影响,采用大涡模拟结合致动线方法研究风力机叶片以及多相质点网格模型处理沙尘颗粒。以两台水平轴风力机模型为研究对象,分析风沙环境下4种不同排布风力机的尾流状态,以及两台风力机轮毂中心处y方向距离对沙尘颗粒时空分布特性的影响。结果表明,两台风力机的串列排布会对下游风力机造成严重的速度亏损,错列排布的下游风力机的速度亏损,会随着y轴间距减增大而减小。风力机不同排布对沙尘输运的影响不同,在两台风力机轮毂中心处y轴方向距离在(0~1)D(D为风力机直径)范围内的错列排布下,阻沙效果会随着y轴方向间距增大而变强。而当y轴间距减少时,促沉降效果更好。
Abstract
The desert areas in northwest China are rich in wind resources, and the development of wind power has been affected by sandstorms, so the relationship between the sand and dust environment and the operation of wind turbines has attracted great attention. In order to explore the influence of wind turbine wake on sand and dust transport, the large eddy simulation combined with the actuatior line method was used to study the processing of sand and dust particles by wind turbine blades and a multiphase particle grid model. Taking two horizontally axis wind turbine models as the research object, the wake states of four wind turbines with different arrangements in the wind-sand environment and the influence of the distance in the Y direction at the center of the hub of the two wind turbines on the temporal and spatial distribution characteristics of sand and dust particles were analyzed. The results show that the tandem arrangement of the two wind turbines causes a serious velocity loss to the downstream wind turbines, and the velocity loss of the downstream wind turbines with the staggered arrangement decreases with the increase of the y-axis spacing. Different arrangements of wind turbines have different effects on sand and dust transport. Under the staggerad arrangement of the two wind turbine, the sand blocking effect becomes stronger as the Y-axis spacing increases within (0-1)D. range When the Y-axis spacing is reduced, the sedimentation promotion effect is better.
关键词
风力机 /
风沙环境 /
沙尘输运 /
致动线 /
干沉降 /
防风阻沙
Key words
wind turbines /
wind-blown sand environment /
sand and dust transport /
actuator line /
dry sedimentation /
wind-sand control
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基金
国家重点研发计划（2022YFB4202102; 2022YFB4202104）; 中国工程院战略研究与咨询项目（2023-DFZD-04）; 国家自然科学基金（51766009）; 甘肃省基础研究创新群体项目（21JR7RA277）
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