Abstract
An image measurement of granular flows was performed for fluidized and suspended solid particles involved in shear flows. Refractivity-matching technique using sodium iodide solution and silica-gel particles was applied to the visualization of the particles with high number density, and the velocity field was obtained using conventional particle tracking velocimetry. The visualized visualized images show that the stratification of the granular bottom could be divided into "suspension layer" and "fluidized layer", they have the different characteristics of distributions of the velocity, particles number density, and turbulent energy. The turbulent energy is shown to be maximum in the fluidized layer.
