Exploring the Effects of Low-Level-Jet Velocity Profiles on the Energy Entrainment of Vertical-Axis Wind Turbines
POSTER
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.
Authors
-
Diego Siguenza
Purdue University
-
Ali Doosttalab
Purdue University, School of Mechanical Engineering, Purdue University
-
Shyuan Cheng
University of Illinois at Urbana-Champaign
-
Humberto Bocanegra-Evans
Purdue University, School of Mechanical Engineering, Purdue University
-
Leonardo Chamorro
University of Illinois at Urbana-Champaign, University of Illinois, Mechanical Science and Engineering Department, University of Illinois, Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, USA
-
Luciano Castillo
Purdue University, School of Mechanical Engineering, Purdue University