Curvature effects on twodimensional turbulent wall jets along concave surfaces
Abstract
The purpose of this paper is to study experimentally the curvature effects on the temporal mean and turbulence characteristics of twodimensional turbulent wall jets along concavely curved surfaces with constant radii of curvature. The surface curvature adopted ranges over B/R = zero to 0.1, where b is the halfwidth of the wall jet and R is the radius of surface curvature. The turbulent energy balance in the wall jets is obtained by measuring the advection, production and dissipation of the turbulent energy. It is shown that the nondimensional magnitudes of the turbulent energy decrease as the surface curvature increases. The effects of curvatures on the time and spacecorrelations of fluctuating velocities are also considered.
 Publication:

JSME International Journal Series B
 Pub Date:
 December 1983
 Bibcode:
 1983JSMEB..26.2074K
 Keywords:

 Concavity;
 Curvature;
 Turbulent Jets;
 Two Dimensional Jets;
 Wall Jets;
 Coefficient Of Friction;
 Flow Measurement;
 Reynolds Stress;
 Surface Properties;
 Velocity Distribution;
 Wind Tunnel Tests;
 Fluid Mechanics and Heat Transfer