Wind Energy Seminar Series
March 12, 2010
Plasma Actuators for Enhanced Wind Turbine Performance
Presentation will focus on a case study analysis performed on the use of Single Dielectric Barrier Discharge (SDBD) plasma actuators to enhance the energy capture of a 1.5 mega watts wind turbine. The object was to reduce the chord of the standard blade by 20 [percent for mass savings on the inboard portion of the rotor without a loss in performance. The reduced mass would then be added to increase the blade length. The motivation for this investigation comes from the fact that the rotor distribution mass with an approach proposed to increase the swept area of a wind turbine without increasing the rotor blade weight. Numerical investigations were conducted to investigate the use of plasma flow control in this rotor design concept. Active flow control, in the form of plasma actuator, was incorporated into the truncated rotor sections to recover the lost aerodynamic performance. Three reduced chord cases were examined through numerical flow simulations.
The cast study is just the first step towards the overall objective of applying a rigorous decision-based design optimization approach to the rotor geometry with active flow control, and to the total wind energy system in general.
Corke is the founding director of the Institute for Flow Physics and Control (FlowPAC), and the director of the Hessert Laboratory for Aerospace Research. He is internationally recognized for his research in the areas of fluid instabilities and transition to turbulence, control of turbulent boundary layers, flow visualization techniques and flow control.
August 11, 2016
WEST LAFAYETTE, Ind. - The U.S. Department of Energy has awarded a grant to a Purdue University professor in the College of Engineering working on the characteristics of metals. Xinghang Zhang, a professor in the School of Materials Engineering, received a $450,000 grant from the federal Office of Basic Energy Sciences as the primary investigator for a three-year research project, "Deformation Mechanisms of Nanotwinned Aluminum and Binary Aluminum alloys." "This allows us to explore fundamental science on mechanical behavior of nanotwinned aluminum and could eventually lead to the design of high strength and ductile aluminum alloys," he said. Nanotwinned metals can be used in many applications because they simultaneously demonstrate high strength and high ductility, characteristics usually thought to be mutually exclusive. Deformation mechanisms describe how a metallic material can change its geometry under external force. The research will be done at the microscopic level by using a transmission electron microscope that can reveal the atomic arrangement inside aluminum. The School of Materials Engineering recently acquired an advanced transmission electron microscope for the deformation project and future research.Read Full Story