Wind-farm simulation over moderately complex terrain

Wake Conference 2017

Segalini, Antonio^1 ; Castellani, Francesco^2

STandUP for Wind, Linné FLOW Centre, KTH Mechanics, Stockholm, Sweden^1

Department of Engineering, University of Perugia, Perugia, Italy^2

关键词: Actuator disc;    Closure models;    Complex terrains;    Fully nonlinear;    Power production;    Turbulence effect;    Velocity deficits;    Wind farm simulations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/854/1/012042/pdf
DOI  :  10.1088/1742-6596/854/1/012042

来源: IOP

【 摘 要 】

A comparison between three independent software to estimate the power production and the flow field in a wind farm is conducted, validating them against SCADA (Supervisory, Control And Data Acquisition) data. The three software were ORFEUS, WindSim and WAsP: ORFEUS and WAsP are linearised solvers, while WindSim is fully nonlinear. A wake model (namely a prescribed velocity deficit associated to the turbines) is used by WAsP, while ORFEUS and WindSim use the actuator-disc method to account for the turbines presence. The comparison indicates that ORFEUS and WAsP perform slightly better than WindSim in the assessment of the polar efficiency. The wakes simulated with ORFEUS appear more persistent than the ones of WindSim, which uses a two-equation closure model for the turbulence effects.