Can I read Comparison of Mean and Dynamic Wake Characteristics between Research-Scale and Full-Scale Wind Turbines on EtoBox?

Comparison of Mean and Dynamic Wake Characteristics between Research-Scale and Full-Scale Wind Turbines by P. Doubrawa; L. A. Martínez-Tossas; E. Quon; P. Moriarty; M. J. Churchfield is a Physics and Astronomy article available to read on EtoBox.

What is Comparison of Mean and Dynamic Wake Characteristics between Research-Scale and Full-Scale Wind Turbines about?

Comprehensive utility-scale wake measurements from commercial wind plants are difficult to obtain. As a result, research in wind farm aerodynamics is often based on smallerscale measurements and on numerical experiments. It is therefore crucial for the scientific community to understand how results compare across scales. In this work, three actuator-line large-eddy simulations are performed to investigate the sensitivity of mean and dynamic wake characteristics to changes in hub height (for the same turbine model) and in rotor size and properties (for a research-scale and a land-based-scale rotor at the same hub height). Results reveal that ground proximity has a large effect on wake expansion via turbulent transport of axial momentum and on the magnitude of lateral and vertical meandering. The rotor-size experiment suggests that wakes from different-scale turbines expand similarly when not limited by the ground, but that the meandering magnitude is not easily translatable across scales. Finally, the short-rotor wake recovers faster than the tall-rotor wake, but the far wakes of the different-sized rotors at the same absolute height are scalable.

Who reads Comparison of Mean and Dynamic Wake Characteristics between Research-Scale and Full-Scale Wind Turbines?

Author

P. Doubrawa; L. A. Martínez-Tossas; E. Quon; P. Moriarty; M. J. Churchfield

Publisher

Institute of Physics; IOP Publishing (ISSN 1742-6588)

Published

2018

Language

EN

Field

Physics and Astronomy (Physical Sciences)