Numerical Simulation of the Draw Down Phenomenon in Glass Furnace Forehearths
The draw down, or the change in elevation of the glass surface across the length of the forehearth, is a significant parameter in the design and operation of forehearths. The main objective of the present work is to compute draw down by simulating the free surface shape of molten glass flowing in a forehearth. The governing equations for mass, momentum and energy transport are solved using the commercial finite element software, FIDAP. The effect of surface tension and gravity is taken into account. A deforming mesh (Arbitrary Lagrangian-Eulerian) approach is used to capture the position and shape of the free surface of the glass. For numerical stability, the simulation is run in a transient manner to compute the free surface shape as a function of the channel length. An additional objective of this work is to study the velocity and temperature distributions in the forehearth in three dimensions.
Katherine ROBB, Jaydeep KULKARNI, Ashwini KUMAR, Abhijit DUTTA, Eric W. GRALD
glass furnace, forehearth, draw down, flow modelling, free surface, CFD.