Abstract
For the wind turbine wake field in the aeolian sand environment, the multiphase flow model is used to simulate the wind sand inflow and the wake of the wind turbine is simulated and calculated in combination with the actuation line model based on the OpenFOAM-v2006. The effects of clean air inflow and wind sand inflow on the wind turbine wake field are compared, including speed loss and wake structure. Equally the particle transport in the wake of wind turbine is analyzed. The results show that the velocity of wind turbine wake recovers faster in the aeolian sand environment, the overall spatial structure is sinking, and the particles will settle in advance and distribute in strips.
Highlights
In Northwest and North China, the wind resource rich area highly coincides with the aeolian sand area, and the influence of wake effect must be considered in the micro site selection and layout of wind turbines [1]
This paper simulates and analyzes the gas-solid flow characteristics in the test section, compares the wind turbine wake flow field of clean air and the wind turbine wake flow field under the incoming sand, and studies the influence of particles on the temporal and spatial evolution of wake and the influence of wind turbine wake on particle transport
For the wind sand flow, the settlement effect caused by the gravity of the particles will be transmitted to the wind turbine wake through the drag force between the gas phase and the particle phase, resulting in the downward trend of the wind turbine wake in space
Summary
In Northwest and North China, the wind resource rich area highly coincides with the aeolian sand area, and the influence of wake effect must be considered in the micro site selection and layout of wind turbines [1]. Deshun Li analyzed the influence of wind sand inflow on blade wear through Fluent [2,3]. Congxin Yang analyzed the wake characteristics of wind turbine under clean inflow by actuation line model simulation [4]. Due to the solid modeling method is limited by the amount of grid calculation, and cannot simulate multiple wind turbines. As a relatively accurate wake model, the actuator line model does not need solid modeling and has a small amount of calculation. Its application is mainly concentrated in single-phase flow system, and there is little research on the application of actuation line in multiphase flow system
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