OSCILLATION OF THE GLASS FLOW IN A COLD-TOP ALL ELECTRIC MELTER

Abstract

A three-dimensional unsteady mathematical model of thermal convection of glass melts was newly developed to investigate the oscillatory behaviour of glass flow in a cold-top all electric melter. A numerical simulation was performed to optimise the glass flow for the production of qualified glass, to examine the onset and transition of the thermal convection, and to demonstrate the effect of the pull and thermal properties on the oscillation. The numerical results verify the dependency of the oscillation mode on the internal Rayleigh number.

Keywords

• glass flow
• cold-top
• all electric melter
• internal rayleigh number
• oscillation
• homogenisation