706 Mixing process of two fluids in a periodically accelerated container

Abstract

A mixing process between a water and brine in an oscillation container was investigated experimentally. The density ratio between the water and brine is 1.2. The fluid flow was driven by periodic acceleration. The driven flow was visualized by using dye method and LIF tracer method. Lagrangian observation was carried out for turbulent mixing process with the compact color CCD camera which mounted on the test section. The mixing process was analyzed by an image processing technique, from which the wave length of turbulence was measured. Velocity vectors were obtained with LIF-PIV technique. The structure of mixing process of two fluids were shown and discussed on the source and decay of turbulent energy.