A Plume-Induced Boundary Layer Separation Experiment
Abstract
The current paper describes an experimental investigation of a PIBLS flowfield produced by the interaction between two nonparallel, supersonic streams in the presence of a finite thickness base. The purpose of the study is to gain a better understanding of., the extent to which the fluid dynamic mechanisms and interactions present in the PIBLS flowfield influence the turbulence properties of the flow. A two-stream, supersonic wind tunnel, incorporating a two-dimensional planar geometry and operating in the blowdown mode, was specifically designed to produce a PIBLS flowfield. Preliminary experiments have demonstrated that the wind tunnel is capable of producing a wide range of PIBLS flowfields by simply regulating the stagnation pressure of the lower stream (jet flow) relative to the upper stream (freestream flow). One PIBLS flowfield has been chosen in which to conduct a detailed set of measurements. This flowfield has its separation point located about 6 delta 0 upstream of the base corner. A detailed study of this PIBLS flowfield is under way using schlieren photography and shadowgraph pictures, surface streakline visualization, surface static pressure measurements, and two-component, coincident LDV measurements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1992
- Accession Number
- ADA255397
Entities
People
- J. C. Dutton
- Russell J. Shaw
Organizations
- University of Illinois Urbana–Champaign