Real-Time Adaptive Control of Mixing in a Plane Shear Layer
Abstract
Work was conducted on two projects related to real-time control of shear flows. In the first, two-dimensional unsteady simulations of the development of the wake behind a circular cylinder impulsively started into rotatory and rectilinear motion were performed. This simulation code is now serving as a testbed for the development of open- and closed-loop strategies for control of the lift/drag ratio as well as the suppression of vortex shedding. The code has been checked by comparison to earlier computational and experimental work. In the second project, a technique was developed to extract both velocity components in a two-dimensional incompressible flow from measurements of a single scalar (temperature or concentration), and all three velocity components in a three-dimensional incompressible flow from measurements of two scalars. The technique is applicable to steady or unsteady, laminar or turbulent flows. A key advantage over particle image velocimetry and other multi-point techniques is that our method uses full-field optical measurements, so that spatial resolution is not limited by particle size and loading restrictions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 02, 1994
- Accession Number
- ADA278379
Entities
People
- Arne J. Pearlstein
Organizations
- University of Illinois Urbana–Champaign