Accession Number : AD0704524

Title :   VERIFICATION OF MODEL OF MOLTEN GLASS FLOW IN A FOREHEARTH.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Pekcelen,Sina

Report Date : DEC 1969

Pagination or Media Count : 63

Abstract : Variations on velocity profiles in a flowing mass of molten glass in a forehearth are investigated. Formerly used parabolic velocity profiles are replaced with analytical solution of open channel flow equation, based on the available data on mass flow of molten glass through the channel in unit time. Concerning the viscosity effects; temperature dependence of viscosity is built in the model. However, it is assumed that the depth of the channel does not affect the viscosity gradients. To solve the system of non-linear differential equations i.e., heat equation and flow equation; the analytical solution of the latter at the nodes is used for the numeric solution of the former iteratively, until the convergence is obtained. Predicted temperatures are compared to the available data from an actual operating forehearth, and against the results predicted by the previous model using simplying assumptions to prove its validity. (Author)

Descriptors :   (*GLASS, MELTING), FLUID FLOW, MATHEMATICAL MODELS, NUMERICAL ANALYSIS, PARTIAL DIFFERENTIAL EQUATIONS, NONLINEAR DIFFERENTIAL EQUATIONS, THESES

Subject Categories : Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE