DOI: 10.1615/ICHMT.1997.IntSymLiqTwoPhaseFlowTranspPhen
ISBN Print: 1-56700-162-9
AN EXPERIMENTAL STUDY ON THE INTERACTION BETWEEN AN IMMISCIBLE DROPLET AND A LIQUID TAYLOR-VORTEX FLOW
RESUMO
We have conducted measurement of the velocity field around an immiscible silicon-oil droplet of 6 mm in diameter carried by water Taylor-vortex flow in an annulus between a stationary cylinder of 80 mm in inner diameter and a rotating cylinder of 60 mm in outer diameter in order to understand the interaction between a droplet and a vortex. The time-varying velocity field has been visualised by tracer particles smaller than 0.3 mm in diameter. The velocity vectors of the particles have been obtained from visualised images by using a particle-tracking-velocimetry method. Experimental results show that the kinetic energy is attenuated due to the diminution of vortical flow. Attenuation of vorticity is found around the droplet except for a small region where the vortical flow impinges.