Velocity field around a disk
Abstract
Measurements of the mean velocity and turbulence characteristics were obtained with a directionsensitive laserDoppler anemometry in the wake of two different disks located in the center line of a jet exiting from a tube. The work includes profiles of the axial and radial mean velocity components and rms values of the three fluctuating velocity components and shear stress. In an effort to detect the presence and magnitude of predominant frequencies, velocity probability distributions and turbulence energy spectra were also obtained. The results indicate a length of the recirculation region equal to 1.35 disk diameters for a 10 mm diameter baffle, increasing with disk diameter, independent of initial velocity and slightly decreasing with the increase of the distance from the jet exit to the baffle.
 Publication:

4th Symposium on Turbulent Shear Flows
 Pub Date:
 1984
 Bibcode:
 1984stsf.proc...19D
 Keywords:

 Disks (Shapes);
 Flow Velocity;
 Turbulent Flow;
 Velocity Measurement;
 Laser Anemometers;
 Probability Distribution Functions;
 Radial Distribution;
 Shear Stress;
 Signal Processing;
 Fluid Mechanics and Heat Transfer