An experimental investigation of a swirling, axisymmetric, turbulent boundary layer with pressure gradient
Abstract
The results of an experimental investigation designed to document data on both mean and turbulence quantities in the axisymmetric, swirling boundary layer (with and without a pressure gradient) flowing over a stationary cylinder downstream of a spinning cylindrical section are discussed. The pressure gradient was introduced into the flow field by a 25.4mmhigh, forwardfacing circular step mounted on the stationary cylinder, the step height being nearly equal to the approaching boundarylayer thickness. All the measurements were made at upstream reference velocity of 3637 m/sec, with the rotation of the spinner set to make its peripheral speed equal to the reference velocity. The data reported include measurements of surface pressure and the mean surfaceshearstress vector (using a miniature directional surfacefence gage) and oilflow visualization studies of the stationary cylinder. The data indicate that the streamwise pressure gradient controls the development of the streamwise component of wall shear but leaves the peripheral component of wall shear practically unaffected.
 Publication:

AIAA, 18th Fluid Dynamics and Plasmadynamics and Lasers Conference
 Pub Date:
 July 1985
 Bibcode:
 1985fdpd.confT....H
 Keywords:

 Axisymmetric Flow;
 Pressure Gradients;
 Swirling;
 Turbulent Boundary Layer;
 Computational Fluid Dynamics;
 Flow Visualization;
 Incompressible Boundary Layer;
 Shear Stress;
 Skin Friction;
 Static Pressure;
 Wall Flow;
 Fluid Mechanics and Heat Transfer