Exploring the Effects of Low-Level-Jet Velocity Profiles on the Energy Entrainment of Vertical-Axis Wind Turbines
Abstract
The velocity peaks created by atmospheric low-level jets results in attractive power resource for wind turbines. We experimentally explored the effects of a series of low-level-jet velocity profiles on the energy entrainment in the wakes of a single and a pair of counter-rotating vertical-axis wind turbine models using particle image velocimetry in a wind tunnel. Results show that the positive shear region of the velocity profiles increases the wake asymmetry due to higher vertical velocity gradients. It is also shown that the LLJ velocity profile improves the wake energy entrainment in comparison with standard boundary layer profiles by increasing the mean kinetic energy advection into the wake.
- Publication:
-
APS Division of Fluid Dynamics Meeting Abstracts
- Pub Date:
- 2020
- Bibcode:
- 2020APS..DFDQ07003S