Affiliations: Division of Mechanical and Automation Engineering,
Kyungnam University, 449 Wolyoung Dong, Masan, Kyungnam, Korea | Department of Mechanical Engineering, Kyungnam
University Graduate School, 449 Wolyoung Dong, Masan, Kyungnam, Korea
Abstract: The study of swirl flow is of technical and scientific interest
because it has an internal recirculation field, and its tangential velocity is
related to the curvature of the streamline. The fluid flow for tubes and elbows
of heat exchangers has been studied largely through experiments and numerical
methods, but studies about swirl flow have been insufficient. Using the
Particle Image Velocimetry method, this study found the time averaged velocity
distribution, time averaged turbulence intensity with swirl and without swirl
flow for Re = 10,000, 15,000, 20,000 and 25,000 along longitudinal sections,
and the results appear to be physically reasonable. In addition, streamwise
mean velocity distribution was compared with those of Khodadai et al. and Jeong
et al.
