Turbulence measurements in wall jets along strongly concave surfaces
Abstract
The effect of wall curvature on the turbulence characteristics of twodimensional wall jets along concavely curved surfaces is investigated. The radius of curvature ranges from 5 m to 0.078 m, which corresponds to a curvature parameter (defined as the ratio of the half width to the radius) of 0.008 to 1.48. It is found that the turbulence intensities in turbulent wall jets along a concave surface increase significantly when the radius of curvature becomes smaller beyond a certain condition. The critical condition is examined and compared with the TaylorGoertler instability for turbulent wall jets. Measurements are also made for the mean velocity field, the Reynolds stress, the turbulence energy balance, and the velocity correlations.
 Publication:

Acta Mechanica
 Pub Date:
 1983
 Bibcode:
 1983AcMec..47...39K
 Keywords:

 Flow Measurement;
 Jet Flow;
 Taylor Instability;
 Turbulent Jets;
 Two Dimensional Jets;
 Wall Jets;
 Boundary Layer Flow;
 Curvature;
 Flow Distribution;
 Flow Velocity;
 Reynolds Stress;
 Velocity Distribution;
 Fluid Mechanics and Heat Transfer