Comparison of the Actuator Line Model with Fully Resolved Simulations in Complex Environmental Conditions

Wake Conference 2017

Weihing, Pascal^1 ; Schulz, Christoph^1 ; Lutz, Thorsten^1 ; Kramer, Ewald^1

University of Stuttgart, Institute of Aerodynamics and Gas Dynamics, Pfaffenwaldring 21, Stuttgart

70569, Germany^1

关键词: Complex terrains;    Environmental conditions;    Fully resolved simulations;    Non-homogeneous;    Unsteady aerodynamics;    Velocity fluctuations;    Wake structures;    Wind turbine simulation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/854/1/012049/pdf
DOI  :  10.1088/1742-6596/854/1/012049

来源: IOP

【 摘 要 】

In the present paper the actuator line method is compared with fully resolved wind turbine simulations in offshore and complex terrain applications. In such flow fields, which are characterized by non-homogeneous and unsteady velocity distributions in the rotor plane, unsteady aerodynamic effects are likely and it is unclear how these characterize the wake development and load behavior of the wind turbine. The wake properties and loads are therefore compared for the case of a 5 MW wind turbine operating in a typical maritime atmosphere and a 2.4 MW onshore turbine located at a complex terrain site downstream of an escarpment. It was found that the actuator line predicts the wake structure, wake deflection and wake deficit in good agreement with the fully resolved simulation. However, an overestimation of velocity fluctuations was observed.