Flow in a rectangular diffuser with local flow detachment in the corner region
Abstract
An experimental study was conducted in order to examine the nature of flow within a high-inlet-aspect-ratio rectangular diffuser with locally detached flow in the corner regions, but attached flow elsewhere in the diffuser. The diffuser configuration consisted of two symmetrically diverging walls and two parallel end walls. The data are based on a low Mach number, high Reynolds number, uniform core, thin-inlet-boundary-layer operating condition. The result include flow visualization data corresponding to tuft and oil flow patterns observed on the diffuser walls and flow angle data taken in the immediate vicinity of the corner. Axial mean velocity and wall static pressure distributions, as well as local wall shear stress profiles, are also presented. Analysis of the results provides new insight into the structure of separated, three-dimensional corner flows, wherein combined attached and detached flow conditions exist simultaneously at each streamwise location.
- Publication:
-
Three Dimensional Turbulent Shear Flows
- Pub Date:
- 1982
- Bibcode:
- 1982tdts.proc...11G
- Keywords:
-
- Boundary Layer Flow;
- Corner Flow;
- Diffusers;
- Three Dimensional Flow;
- Turbulent Flow;
- Wall Flow;
- Flow Velocity;
- Flow Visualization;
- High Aspect Ratio;
- High Reynolds Number;
- Mach Number;
- Pressure Distribution;
- Shear Stress;
- Fluid Mechanics and Heat Transfer