A Quantitative Study Of The Homogenizing Of Glass Melts

A simple method of quantitatively estimating the homogeneity of glass from measurements of etching by hydrofluoric acid was developed. This was used to study the homogenizing of mixtures of two different glasses stirred with a simple disk stirrer. The kinetics of homogenizing were typical of a diffusive process but much affected by initial distribution of the two glasses. Flow patterns were not those expected from study of models with constant density and viscosity. It appears that effects of density and viscosity on mixing of viscous liquids at very low Reynolds numbers deserve further study.