Fluid Dynamic Mechanisms and Interactions within Separated Flows
Abstract
The experimental results of this grant consist of detailed laser Doppler velocimeter (LDV), particle image velocimeter (PIV), and high-speed wall pressure measurements made in axisymmetric and planar, subsonic and supersonic flows with embedded separated regions. The LDV experiments have yielded high quality, well documented mean velocity and turbulence data for a variety of high-speed separated flows, including the near-wake regions behind a cylindrical afterbody, an axisymmetric afterbody with a boattail, and a cylindrical afterbody with base bleed in supersonic flow. The PIV experiments have studied the effect of a base cavity in a two-dimensional, subsonic base flow and the mechanism of drag reduction for this configuration. Another experimental study has considered the interaction occurring when a supersonic stream is separated by means of a second stream impinging the first at an angle (plume-induced separation). High-speed wall pressure measurements made beneath the unsteady separation shock wave and conditionally analyzed mean velocity and turbulence data in the interaction region have been obtained for this configuration. The results of these studies have been carefully documented in a series of journal articles, conference proceedings papers, and theses. The full text of the papers and thesis abstracts are included as appendices of this report.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1998
- Accession Number
- ADA358491
Entities
People
- A. L. Addy
- J. C. Dutton
Organizations
- University of Illinois Urbana–Champaign