Five-hole pitot probe measurements of swirl, confinement and nozzle effects on confined turbulent flowThe results of a time-mean flow characterization of nonswirling and swirling inert flows in a combustor are reported. The five-hole pitot probe technique was used in axisymmetric test sections with expansion ratios of 1 and 1.5. A prominent corner recirculation zone identified in nonswirling expanding flows decreased in size with swirling flows. The presence of a downstream nozzle led to an adverse pressure gradient at the wall and a favorable gradient near the centerline. Reducing the expansion ratio reduced the central recirculation length. No significant effect was introduced in the flowfield by a gradual expansion.
Document ID
19840055213
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lilley, D. G. (Oklahoma State University Stillwater, OK, United States)
Scharrer, G. L. (Oklahoma State Univ. Stillwater, OK, United States)