The Effectiveness of Actuators Used in Active Flow Controls: Numerical Simulations, Analysis and Experiments
Abstract
Acquiring the ability to effectively modify and control the behavior of fluid flow continues to be a pervasive and important aspiration in many areas of engineering. The present research continues to advance the technology of various schemes that employ the use of wall-mounted actuators for active flow control. Any design in which fluid-flow characteristics are important (aircraft, turbomachinery, ships, etc.) stands to benefit from this new technology of manipulating the flow behavior by time dependent forcing. Research completed to date promises reduced cost, complexity, and weight along with significant improvement in design performance. A summary of this research indicates however, that the details of the disturbance excitation process have still not been completely explored, and hence an understanding of the important parameters in actuator design is currently unavailable to the engineer. Only with this knowledge will it be possible to design devices for specific tasks that are efficient and effective in their performance. Our program of research examines boundary value periodic point source excitations of laminar boundary layers, and considers how some more complex actuators might be modeled numerically. The study is carried out in three parts: i. linear theory, ii. wind tunnel measurements, iii. full Navier-Stokes modeling.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2002
- Accession Number
- ADA406701
Entities
People
- Hermann Fasel
- Israel J. Wygnanksi
- Michael Gaster
Organizations
- University of Arizona