Transitional DDES computations of the NREL Phase-VI rotor in axial flow conditions

The Science of Making Torque from Wind 2012

Sørensen, Niels N.^1 ; Schreck, Scott^1

DTU Wind Energy Division, Technical University of Denmark, Rise Campus, Bldg 115, Frederiksborgvej 399, NREL's National Wind Technology Center, Golden, CO 80401, US^1

关键词: CFD simulations;    Delayed detached eddy simulation (DDES);    Flow condition;    Laminar/turbulent transitions;    Power production;    Transient behavior;    Turbulence intensity;    Unsteady loads;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/555/1/012096/pdf
DOI  :  10.1088/1742-6596/555/1/012096

来源: IOP

【 摘 要 】

In the present article we describe CFD simulations of the well known NREL Phase-VI rotor in axial flow conditions using a newly developed technique of combining turbulence modeling by the Delayed Detached Eddy Simulation (DDES) technique with laminar/turbulent transition modeling by a correlation based method. We demonstrate how the power production around the onset of stall is very dependent on the turbulence intensity in the inflow. Additionally, we compare with measurements and illustrate how the unsteady loads from the DDES simulations can provide valuable insight in the transient behavior of the rotor loads.