Radiative Heat Transfer In Glass Manufacture - One- And Two-Dimensional Problems

The one-dimensional radiation-conduction model, originally developed by Gardon, has been used to calculate the rate of reheat of glass surfaces after forming in metal moulds, and the rate of temperature changes in glass in a forehearth following a step change in roof temperature. A two-dimensional radiation-conduction model has been developed and used to calculate the rates of temperature change in glass in a forehearth. These calculations also show that the "effective conductivity" method is inadequate.