Currents and Temperatures in Glass Tanks. I.

JSGT_ 1931 V15  T012-T029

 From the work of O. Stumm, W. König and H. Jebsen-Marwedel, it is known that temperature gradients in glass tanks cause convection currents in the molten glass. The currents are sometimes of considerable strength (with velocities up to 12metres per hour) and they can influence appreciably the melting and refining processes as well as the homogeneity of the glass. König first gave the right explanation, which is that glass flows from regions of high to regions of lower temperature, because it has a greater density in the latter regions.

G. Gehlhoff, with W. Schneekloth & M. Thomas (Translated by H. W. Howes)