Mean Flow and Turbulence Measurements of Annular Swirling Flows

Abstract

This paper presents the results of a detailed experimental investigation of swirling flows in a cylindrical annulus. Flows having nominal swirl angles of 0, 15, 30, and 45 degrees were measured. Mean velocity components, total and static pressures, wall shear and Reynolds stresses were measured. Mixing length and eddy viscosity distributions were deduced from the data. The majority of the flow field measurements were made with single-sensor hot-wire anemometer probes; six independent readings, each with a different sensor orientation, were made at each point. Consistency checks were applied wherever possible and indicate that the data are of high quality.