Fourth International Symposium on Turbulence and Shear Flow Phenomena
DOI: 10.1615/TSFP4
AN EXPERIMENTAL STUDY ON TURBULENT SWIRLING WATER FLOW WITH IMMISCIBLE DROPLETS
pages 75-80
DOI: 10.1615/TSFP4.120
RÉSUMÉ
We have carried out measurements of the flow field of turbulent swirling water flow with low-density immiscible oil droplets in a horizontal pipe. The swirl is obtained with a stationary impeller inside the pipe. The flow is visualized with tracer particles and the images of visualized flow are captured from the side and downstream-end of the pipe with video cameras. The instantaneous velocity field is measured from the captured images with the particle tracking velocimetry method. The experimental results show that the low-density droplets have relative motion to the ambient water due to the buoyancy force and lift force. The periodic pulsative wake flow of the droplets causes the increase in the turbulence intensity.