Aerodynamic Control of Coupled Body-Wake Flow Instabilities on a Free-Moving Platform
Abstract
This experimental research effort will explore the unsteady flow mechanics for aerodynamic control of coupling between a free-moving bluff body and its wake instabilities. Control will be effected by fluidic actuation on the moving flow boundary at the aft end of the bluff body. It is hypothesized that alteration of the global stability characteristics of the near wake will enable control of motion and stability through deliberate modification of the unsteady aerodynamic loads on the body. Wind tunnel investigations will be conducted using an axisymmetric bluff body integrated with individually-controlled miniature fluidic actuators. Leveraging an ARO DURIP allowed the construction and implementation of a traverse which allows precise control of the motion of a wire mounted model in six degree of freedom. The interactions between the actuation and cross flow and the resulting influence on the wake stability will be investigated using high-speed digital particle image velocimetry and a motion capture/analysis system. The velocity and force data will be used to link the wake evolution and body motion to the unsteady aerodynamic loads.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 13, 2016
- Source ID
- W911NF1510153
Entities
People
- Ari Glezer
Organizations
- Army Contracting Command
- Georgia Tech Research Corporation
- United States Army