Modelling fiber drawing: capillary manufacture

Summary from only given. Since the optical properties of a microstructured fiber depend critically upon the hole arrangement, it is important to be able to predict how the fabrication parameters influence the final cross-section. in order to accomplish this, we have developed a theoretical framework to study the problem of capillary drawing which is also of practical importance since it is a crucial step in the fabrication of more complex microstructured fibers. To develop a model that is capable of including effects such as surface tension, varying viscosity and internal hole overpressure, we begin from the Navier-Stokes equations. Asymptotic analysis has been used to simplify these equations for a number of regimes of physical interest, and we present here some of the useful insights provided by this approach.