Numerical Simulation of Viscous Sintering by a Periodic Lattice of aRepresentative Unit Cell

摘要

In the paper, numerical simulations of the viscous sintering phenomenon arepresented, ie. of the process that occurs (for example) during the densification of a porous glass heated to such a high temperature that it becomes a viscous fluid. The numerical approach consists of simulating the shrinkage of a two-dimensional unit cell which is in some sense representative for the porous glass. It is possible to obtain quite a few theoretical insights of the viscous sintering process with respect to both pore size and pore distribution of the material. In particular, this model is able to examine the consequences of microstructures on the evaluation of the pore size distribution.